From 2ca3abf42fa2a21916b221bba3030befc49a944e Mon Sep 17 00:00:00 2001
From: electria <elec3137+git@proton.me>
Date: Thu, 16 Jul 2026 00:13:37 -0700
Subject: [PATCH] feat: implicit mult

---
 src/nodes/from_str.rs | 14 ++++++++++++++
 src/nodes/mod.rs      |  3 ++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/nodes/from_str.rs b/src/nodes/from_str.rs
index 5d77c7f..ea7b4c3 100644
--- a/src/nodes/from_str.rs
+++ b/src/nodes/from_str.rs
@@ -94,6 +94,10 @@ impl FromStr for Nodes {
                 ParsingState::Start => {}
                 ParsingState::ReadingFunctionName(start_index) => {
                     if !c.is_alphabetic() {
+                        if matches!(nodes.last(), Some(Node::ParenthesisEnd | Node::Number(_))) {
+                            nodes.push(Node::Operator(Default::default()));
+                        }
+
                         nodes.push(Node::from_name(&filtered_string[start_index..i])?);
 
                         state = ParsingState::Start;
@@ -101,6 +105,10 @@ impl FromStr for Nodes {
                 }
                 ParsingState::ReadingNumber(start_index) => {
                     if !is_number_char(c) {
+                        if matches!(nodes.last(), Some(Node::ParenthesisEnd)) {
+                            nodes.push(Node::Operator(Default::default()));
+                        }
+
                         nodes.push(Node::Number(
                             Float::parse(&filtered_string[start_index..i])
                                 .map_err(|e| {
@@ -144,9 +152,15 @@ impl FromStr for Nodes {
         match state {
             ParsingState::Start => {}
             ParsingState::ReadingFunctionName(start_index) => {
+                if matches!(nodes.last(), Some(Node::ParenthesisEnd | Node::Number(_))) {
+                    nodes.push(Node::Operator(Default::default()));
+                }
                 nodes.push(Node::from_name(&filtered_string[start_index..i])?);
             }
             ParsingState::ReadingNumber(start_index) => {
+                if matches!(nodes.last(), Some(Node::ParenthesisEnd)) {
+                    nodes.push(Node::Operator(Default::default()));
+                }
                 nodes.push(Node::Number(
                     Float::parse(&filtered_string[start_index..i])
                         .map_err(|e| {
diff --git a/src/nodes/mod.rs b/src/nodes/mod.rs
index 42f73c8..84c7583 100644
--- a/src/nodes/mod.rs
+++ b/src/nodes/mod.rs
@@ -28,10 +28,11 @@ enum Node {
     Operator(Operator),
 }
 
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Default, Clone, Debug, PartialEq)]
 enum Operator {
     Plus,
     Minus,
+    #[default]
     Mult,
     Div,
     Exp,