From a2cd094b55e63b7ca84d6cfc79c6caf4b000843e Mon Sep 17 00:00:00 2001
From: Abhishek Kumar <abhishek22512@gmail.com>
Date: Wed, 24 Jan 2024 14:54:13 +0530
Subject: [PATCH] refactor(lexer): fix warnings by 'cargo clippy' for lexer

Signed-off-by: Abhishek Kumar <abhishek22512@gmail.com>
---
 kclvm/lexer/src/number.rs | 2 +-
 kclvm/lexer/src/tests.rs  | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/kclvm/lexer/src/number.rs b/kclvm/lexer/src/number.rs
index f9f7d9ab2..0458b1fd1 100644
--- a/kclvm/lexer/src/number.rs
+++ b/kclvm/lexer/src/number.rs
@@ -66,7 +66,7 @@ impl<'a> Cursor<'a> {
                 // with a number
                 self.bump();
                 let mut empty_exponent = false;
-                if self.peek().is_digit(10) {
+                if self.peek().is_ascii_digit() {
                     self.eat_decimal_digits();
                     match self.peek() {
                         'e' | 'E' => {
diff --git a/kclvm/lexer/src/tests.rs b/kclvm/lexer/src/tests.rs
index 2bd614658..511b49854 100644
--- a/kclvm/lexer/src/tests.rs
+++ b/kclvm/lexer/src/tests.rs
@@ -1,10 +1,13 @@
 use super::*;
 use expect_test::{expect, Expect};
+use std::fmt::Write;
 
 fn check_lexing(src: &str, expect: Expect) {
     let actual: String = tokenize(src)
-        .map(|token| format!("{:?}\n", token))
-        .collect();
+        .fold(String::new(), |mut acc, token| {
+            writeln!(acc, "{:?}", token).expect("Failed to write to string");
+            acc
+        });
     expect.assert_eq(&actual)
 }