From d8f21d97baaef3ab68ac9f39dd1c29d4f6b0c958 Mon Sep 17 00:00:00 2001
From: Andrew Hamilton <and_hamilton@yahoo.com>
Date: Thu, 9 Dec 2021 23:32:14 +1000
Subject: [PATCH] Coding style.

- Avoid using eval.
- Use more lru_caches.
---
 eris/eris/tools.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/eris/eris/tools.py b/eris/eris/tools.py
index 2d3b2a4..d9424df 100755
--- a/eris/eris/tools.py
+++ b/eris/eris/tools.py
@@ -114,11 +114,13 @@ def deps(**kwargs):
 
 
 def _syntax_highlight(text, lexer, style):
+    @functools.lru_cache(maxsize=500)
     def _parse_rgb(hex_rgb):
         if hex_rgb.startswith("#"):
             hex_rgb = hex_rgb[1:]
-        return tuple(eval("0x"+hex_rgb[index:index+2]) for index in [0, 2, 4])
+        return tuple(int("0x" + hex_rgb[index:index+2], base=16) for index in [0, 2, 4])
 
+    @functools.lru_cache(maxsize=500)
     def _char_style_for_token_type(token_type, default_bg_color, default_style):
         try:
             token_style = style.style_for_token(token_type)