feat: python

13-17/lianxi-01xuniji.py

@@ -0,0 +1,88 @@
+class SimpleVM:
+    # 初始化方法
+    def __init__(self):
+        self.stack = []
+        self.locals = {}
+        self.globls = {}
+
+    def load_const(self, const):
+        # 将常量推到栈中
+        self.stack.append(const)
+        print(f"加载常量: {const} -> 栈: {self.stack}")
+
+    def store_name(self, name):
+        if not self.stack:
+            raise RuntimeError("栈为空")
+        # 取出值
+        value = self.stack.pop()
+        # 存储到字典中
+        self.locals[name] = value
+        print(f"存储变量: {name} = {value}")
+
+    def load_name(self, name):
+        if name in self.locals:
+            value = self.locals[name]
+        elif name in self.globls:
+            value = self.globls[name]
+        else:
+            raise RecursionError(f"name:{name} is not defined")
+        self.stack.append(value)
+        print(f"加载变量: {name} = {value} -> 栈: {self.stack}")
+
+    def binary_add(self):
+        if len(self.stack) < 2:
+            raise RecursionError("栈中元素不足")
+        #
+        a = self.stack.pop()
+        b = self.stack.pop()
+        result = a + b
+        self.stack.append(result)
+        print(f"加法: {a} + {b} = {result} -> 栈: {self.stack}")
+
+    def return_value(self):
+        if not self.stack:
+            return None
+        value = self.stack.pop()
+        print(f"返回: {value}")
+        return value
+
+
+def vm_execution():
+    vm = SimpleVM()
+    # 输出即将执行的代码说明
+    print("执行代码: a = 10; b = 20; c = a + b")
+    # 构造指令序列
+    instructions = [
+        ("LOAD_CONST", 10),  # 加载常量10
+        ("STORE_NAME", "a"),  # 存储到变量a
+        ("LOAD_CONST", 20),  # 加载常量20
+        ("STORE_NAME", "b"),  # 存储到变量b
+        ("LOAD_NAME", "a"),  # 加载变量a
+        ("LOAD_NAME", "b"),  # 加载变量b
+        ("BINARY_ADD",),  # 执行加法
+        ("STORE_NAME", "c"),  # 存储到变量c
+        ("LOAD_NAME", "c"),  # 加载变量c
+        ("RETURN_VALUE",),  # 返回值
+    ]
+
+    for instruction in instructions:
+        # 获取操作嘛
+        op = instruction[0]
+        # 获取操作参数
+        args = instruction[1:] if len(instruction) > 1 else []
+        # 判断不同指令，来调用不同的方法
+        if op == "LOAD_CONST":
+            vm.load_const(args[0])
+        elif op == "STORE_NAME":
+            vm.store_name(args[0])
+        elif op == "LOAD_NAME":
+            vm.load_name(args[0])
+        elif op == "BINARY_ADD":
+            vm.binary_add()
+        elif op == "RETURN_VALUE":
+            result = vm.return_value()
+
+    print(f"最终打印结果c={result}")
+
+
+vm_execution()