add a feature on my updater billbill

Lib/test.py

@@ -0,0 +1,154 @@
+from typing import Set
+import operator as op
+
+variables = {}
+
+
+class MyCode:
+    index = 0
+
+    def __hash__(self):
+        MyCode.index += 1
+        return MyCode.index
+
+    def do(self):
+        ...
+
+
+class SetValue(MyCode):
+    """赋值 a = 15 语句"""
+
+    def __init__(self, name, value):
+        self.name = name
+        self.value = value
+
+    def do(self):
+        variables[self.name] = self.value
+
+    def __str__(self):
+        return "<SetValue>"
+
+
+class GetValue(MyCode):
+    def __init__(self, name):
+        self.name = name
+
+    def do(self):
+        return variables[self.name]
+
+
+class ChangeValue(MyCode):
+    # i += 1
+    def __init__(self, name, dv, op):
+        self.name = name
+        self.dv = dv
+        self.op = op
+
+    def do(self):
+        variables[self.name] = self.op(variables[self.name], self.dv)
+
+
+class Op(MyCode):
+    # i < 1000
+    def __init__(self, left, operator, value):
+        self.left = left
+        self.operator = operator
+        self.value = value
+
+    def do(self):
+        if isinstance(self.left, str):
+            return self.operator(variables[self.left], self.value)
+        elif isinstance(self.left, MyCode):
+            return self.operator(self.left.do(), self.value)
+        else:
+            return self.operator(self.left, self.value)
+
+
+# class Judge(MyCode):
+#     def __init__(self, name, value):
+#         self.name = name
+#         self.value = value
+#
+#     def do(self):
+#         return variables[self.name] == self.value
+#
+#     def __str__(self):
+#         return "<Judge>"
+
+
+class If(MyCode):
+    def __init__(self, *args, **kwargs):
+        if len(args) == 4:  # if ((condition) {} else {})
+            # if (() {})
+            self.condition = args[0]
+            self.doCode: Set[MyCode] = args[1]
+            self.elseDo: Set[MyCode] = args[3]
+        elif len(args) == 2:
+            self.condition = args[0]
+            self.doCode: Set[MyCode] = args[1]
+            self.elseDo: Set[MyCode] = set()
+
+    def do(self):
+        if self.condition.do():
+            for code in self.doCode:
+                code.do()  # bug
+        elif self.elseDo:
+            for code in self.elseDo:
+                code.do()
+
+    def __str__(self):
+        return "<IF>"
+
+
+class For(MyCode):
+    def __init__(self, initContent, judgeContent, loopContent, loopCode):
+        self.initContent = initContent
+        self.judgeContent = judgeContent
+        self.loopContent = loopContent
+        self.loopCode: Set[MyCode] = loopCode
+
+    def do(self):
+        self.initContent.do()
+        while self.judgeContent.do():
+            for code in self.loopCode:
+                code.do()
+            self.loopContent.do()
+
+
+class Print(MyCode):
+    def __init__(self, string):
+        self.string = string
+
+    def do(self):
+        if isinstance(self.string, str):
+            print(self.string)
+        elif isinstance(self.string, MyCode):
+            print(self.string.do())
+
+
+class NameSpace:
+    def __init__(self, *args):
+        self.arr = args
+
+    def run(self):
+        for code in self.arr:
+            code.do()
+
+
+# 打印出0~1000内左右的偶数
+ns = NameSpace(
+    For(SetValue("i", 0), Op(GetValue("i"), op.lt, 1000), ChangeValue("i", 1, op.add), {
+        # (i % 2) == 0
+        If((Op(Op("i", op.mod, 2), op.eq, 0)), {
+            Print(GetValue("i"))
+        })
+    })
+)
+
+def main():
+    ns.run()
+    # print(variables)
+
+
+if __name__ == "__main__":
+    main()