public override void execute(StackFrame frame)
{
if (depth > 0){
throw new ToyVMException("Don't support dup2 with depth of " + depth,frame);
}
Object obj = frame.popOperand();
Object obj2 = null;
if (frame.hasMoreOperands()){
obj2 = frame.popOperand();
}
/*System.Collections.Stack temp = new System.Collections.Stack();
for (int i = 0; i < depth; i++){
temp.Push(frame.popOperand());
}
frame.pushOperand(obj); // insert at depth depth
while (temp.Count > 0){
frame.pushOperand(temp.Pop());
}
*/
frame.pushOperand(obj); // put the duplicated one back on top
if (obj2 != null){
frame.pushOperand(obj2);
}
frame.pushOperand(obj); // put the duplicated one back on top
if (obj2 != null){
frame.pushOperand(obj2);
}
}