public static DisposeGuard Guard(this IDisposable disposable)
{
if (disposable == null)
{
throw new ArgumentNullException("disposable");
}
DisposeGuard result = default(DisposeGuard);
result.Add <IDisposable>(disposable);
return(result);
}
private IDisposable SwapSlot(int index, IDisposable newValue)
{
switch (index)
{
case 0:
return(DisposeGuard.Swap(ref this.fixedSlot0, newValue));
case 1:
return(DisposeGuard.Swap(ref this.fixedSlot1, newValue));
case 2:
return(DisposeGuard.Swap(ref this.fixedSlot2, newValue));
case 3:
return(DisposeGuard.Swap(ref this.fixedSlot3, newValue));
default:
return(DisposeGuard.Swap(ref this.overflowSlots[index - 4], newValue));
}
}
public T Add <T>(T disposable) where T : class, IDisposable
{
this.CheckDisposed();
if (disposable == null)
{
return(disposable);
}
bool flag = false;
try
{
this.AddGuardedObject(disposable);
flag = true;
}
finally
{
if (!flag)
{
DisposeGuard.DisposeIfPresent(disposable);
}
}
return(disposable);
}
private void RemoveLastGuardedObject()
{
DisposeGuard.DisposeIfPresent(this.SwapSlot((int)(this.SlotCount - 1), null));
this.SlotCount -= 1;
}