init

Prework/test.cpp

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+// 这是一份测试代码，仅供参考
+// #include "calc_std.h"
+#include "calc.h"
+#include <iostream>
+
+
+node *generate(int);
+
+// Expected: 17711
+signed main() {
+    node *root = generate(20);
+    visitor *calc = new calculator;
+    auto result = calc->visit(root);
+    if (auto value = std::any_cast <double> (&result)) {
+        std::cout << "Result: " << *value << '\n';
+    } else {
+        std::cout << "Wrong Type" << '\n';
+    }
+    return 0;
+}
+
+
+// 生成器，小孩子不懂写着玩的
+node *generate(int depth) {
+    if (depth <= 0) {
+        num_node *ret = new num_node;
+        ret->number = (double)1.0;
+        return ret;
+    }
+    add_node *root = new add_node;
+    root->lnode = generate(depth - 1);
+    root->rnode = generate(depth - 2);
+    return root;
+}