public void Reset()
{
this.currentValue = -1;
if (this.nextDimension != null)
{
this.nextDimensionEnumerator = new AbstractDimensionEnumerator(this.nextDimension);
}
}
public bool MoveNext()
{
// This is a very verbose implementation, but I found it easy to reason through while writing it.
// I'm sure some if/else statements can be removed.
if (this.nextDimension == null)
{
if (this.IsOnLastElement())
{
return(false);
}
this.currentValue += 1;
return(true);
}
else
{
if (this.IsOnLastElement())
{
// I need to check if next dimension is also on last element.
if (!this.nextDimensionEnumerator.IsOnLastElement())
{
// Because next dimension is not on the last, we move it to its next.
this.nextDimensionEnumerator.MoveNext();
return(true);
}
else
{
// Next dimension and I are both on the last one.
return(false);
}
}
else
{
if (!this.nextDimensionEnumerator.IsOnLastElement())
{
// Because next dimension is not on the last, we move it to its next.
this.nextDimensionEnumerator.MoveNext();
if (this.currentValue == -1)
{
// If I haven't started myself, I also have to move next.
this.currentValue += 1;
}
return(true);
}
else
{
// Next dimension is on last one, but I'm not.
// We create a new iterator for next dimension and move it to its first element.
// I move to my next position.
this.nextDimensionEnumerator = new AbstractDimensionEnumerator(this.nextDimension);
this.nextDimensionEnumerator.MoveNext();
this.currentValue += 1;
return(true);
}
}
}
}