Fortress

There should be possibility to set up order of operands traversal.

After calling onOperationBegin the walker should call the getOrder method. The result is an integer array defining the traversal order:

onOperationBegin(operation);
int[] order = getOrder();
...
for (int index = 0; index < number; index++) {
  Operand operand = node.getOperand(order != null ? order[index] : index);
  onOperandBegin(operand, index); // IMPORTANT: index (not order[index])!
  ...
}