From what I know, Graal encodes the values as string-representations... So there is no true 'type' of variable. value = 12 and value = "12" is the same thing!
The best way to do the bit-shift is just... number = number >> 2;
This would work for unsigned values... And would do a bit-shift!
There is no special signed bit-shift around.
As for the max integer... Because values are numbers represented by strings... There is no real boundary.
You might want to look here for basic operators:
http://wiki.graal.net/index.php/Crea...uide#Operators