def execute(self, frame):
stack = frame.operand_stack
slot1 = stack.pop_slot()
slot2 = stack.pop_slot()
stack.push_slot(slot2)
stack.push_slot(slot1)
stack.push_slot(copy_slot(slot2))
stack.push_slot(copy_slot(slot1))
def clone_data(self):
if not isinstance(self.data, Slots):
new_data = list(self.data)
return new_data
else:
new_data = Slots(len(self.data))
for i, slot in enumerate(self.data):
new_data[i] = copy_slot(slot)
return new_data
def execute(self, frame):
stack = frame.operand_stack
slot = stack.pop_slot()
stack.push_slot(slot)
# 采用自定义的对象深拷贝，复制slot
stack.push_slot(copy_slot(slot))