From 37a203e25421c8a9e8d231cc2486e7df9b2ce177 Mon Sep 17 00:00:00 2001
From: Shunsuke Shibayama <sbym1346@gmail.com>
Date: Fri, 23 Dec 2022 23:08:00 +0900
Subject: [PATCH] Update error.rs

---
 compiler/erg_compiler/error.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/erg_compiler/error.rs b/compiler/erg_compiler/error.rs
index 276047b0..05b84762 100644
--- a/compiler/erg_compiler/error.rs
+++ b/compiler/erg_compiler/error.rs
@@ -105,6 +105,8 @@ pub fn binop_to_dname(op: &str) -> &str {
         "<=" => "__le__",
         ">" => "__gt__",
         ">=" => "__ge__",
+        "<<" => "__lshift__",
+        ">>" => "__rshift__",
         other => todo!("no such binary operator: {other}"),
     }
 }
@@ -154,6 +156,8 @@ pub fn readable_name(name: &str) -> &str {
         "__invert__" => "`~`",
         "__mutate__" => "`!`",
         "__spread__" => "`...`",
+        "__lshift__" => "`<<`",
+        "__rshift__" => "`>>`",
         other => other,
     }
 }