def _op_addr(self, op):
addr = op.addr
if op.indirect:
ptr = self.get_addr(addr)
ops.check_legal(
isinstance(ptr, ops.Integer), "No integer in %s." % (addr,))
addr = ptr.integer
return addr
def not_none(value):
ops.check_legal(value is not None, "No value held.")
return value
def get_addr(self, addr):
ops.check_legal(addr in self._cells, "No value in %s." % (addr,))
return self._cells[addr]
