From 0f3ee4167371efa36c9dc0d09ec8136242dfa3ca Mon Sep 17 00:00:00 2001
From: Rendo <geometicalplayer@gmail.com>
Date: Sat, 8 Nov 2025 18:03:54 +0500
Subject: [PATCH] Insertion

---
 src/node/node_modifier.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/node/node_modifier.rs b/src/node/node_modifier.rs
index fb4b449..c748d7e 100644
--- a/src/node/node_modifier.rs
+++ b/src/node/node_modifier.rs
@@ -8,6 +8,7 @@ pub struct NodeModifier<'a> {
 }
 
 impl<'a> NodeModifier<'a> {
+    //Builders
     pub fn from_random(root: &'a mut Node) -> NodeModifier<'a> {
         let mut selected = root;
         while random_range(0..PICK_STOP_PROBABILITY) == PICK_STOP_PROBABILITY - 1 {
@@ -21,4 +22,16 @@ impl<'a> NodeModifier<'a> {
     pub fn from_node(node: &'a mut Node) -> NodeModifier<'a> {
         NodeModifier { picked_node: node }
     }
+
+    pub fn add_node(&mut self, node: Node) {
+        self.picked_node.children.push(node);
+    }
+
+    pub fn insert_node(&mut self, mut node: Node, between: Option<usize>) {
+        let children_count = self.picked_node.children.len();
+        let operated_index = between.unwrap_or(random_range(0..children_count));
+        let moved = self.picked_node.children.remove(operated_index);
+        node.children.push(moved);
+        self.picked_node.children.insert(operated_index, node);
+    }
 }