From 5e7bb5da96c91389206b8782ef25bbb10bc1c7b7 Mon Sep 17 00:00:00 2001
From: LinlyBoi <libkyy@e.email>
Date: Thu, 18 May 2023 07:53:56 +0300
Subject: [PATCH] it begins

---
 src/calc.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/calc.rs

diff --git a/src/calc.rs b/src/calc.rs
new file mode 100644
index 0000000..26592d7
--- /dev/null
+++ b/src/calc.rs
@@ -0,0 +1,36 @@
+struct calcNode {
+    item: Item,
+    left: Option<Box<calcNode>>,
+    right: Option<Box<calcNode>>,
+}
+impl Default for calcNode {
+    fn default() -> Self {
+        Self {
+            item: Item::Num(1),
+            left: None,
+            right: None,
+        }
+    }
+}
+
+impl calcNode {
+    pub fn new(item: Item, left: Option<Box<calcNode>>, right: Option<Box<calcNode>>) -> Self {
+        Self { item, left, right }
+    }
+}
+pub enum Item {
+    Num(i32),
+    Oper(Operation),
+}
+pub enum Operation {
+    Add,
+    Sub,
+    Div,
+    Mult,
+}
+#[derive(Default)]
+pub struct calcTree {
+    root: calcNode,
+}
+
+impl calcTree {}