public static Sha256 GetInstance()
{
Sha256 instance;
try
{
instance = DoGetInstance(defaultType);
}
catch (Exception e)
{
Logger.GetInstance(typeof(Sha256)).Fatal("Instance initialization error: " + e);
Logger.GetInstance(typeof(Sha256)).Info("Initializing " + typeof(DefaultSha256).FullName + "...");
instance = new DefaultSha256();
}
return(instance);
}
private static Sha256 DoGetInstance(Type type)
{
if (type == null)
{
throw new ArgumentException("Invalid arguments to get " + typeof(Sha256).Name + " instance");
}
var key = type.FullName + "_";
Sha256 instance = null;
if (Instances.ContainsKey(key))
{
instance = Instances[key];
}
if (instance == null)
{
Logger.GetInstance(typeof(Sha256)).Info("Initializing " + key + "...");
var constructor = type.GetConstructor(new Type[] { });
if (constructor != null)
{
instance = (Sha256)constructor.Invoke(new object[] { });
}
}
if (instance == null)
{
Logger.GetInstance(typeof(Sha256)).Info("Initializing " + typeof(DefaultSha256).FullName + "...");
instance = new DefaultSha256();
}
lock (InstancesLock)
{
if (!Instances.ContainsKey(key))
{
Instances.Add(key, instance);
}
}
return(instance);
}