From 4fd04e8fd3c98c94f32a032dbcb12bad5f4f2796 Mon Sep 17 00:00:00 2001
From: Seymur Bagirov <seymur.baghirov@proton.me>
Date: Fri, 3 Jan 2025 03:20:09 +0400
Subject: [PATCH] feat: finish challenge #1 from chapter 6

---
 src/parser.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/parser.rs b/src/parser.rs
index 0265a8c..fb97903 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1,5 +1,3 @@
-use std::fmt::Display;
-
 use crate::{
     ast::Expr,
     token::{LiteralType, Token, TokenType},
@@ -26,7 +24,13 @@ impl Parser<'_> {
     }
 
     fn expression(&mut self) -> Result<Expr, ParseError> {
-        self.equality()
+        self.comma()
+    }
+
+    // Challenge #1. We're writing comma before equality, because it has the lowest precedence
+    fn comma(&mut self) -> Result<Expr, ParseError> {
+        use TokenType::*;
+        self.left_association_binary(&[Comma], Parser::equality)
     }
 
     fn equality(&mut self) -> Result<Expr, ParseError> {