From cb9dc791a0e83f90391cc234b03cb5e4769400b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Thu, 31 Mar 2022 15:04:48 +0200
Subject: [PATCH] Re-use regex pattern in naming style (#6072)

---
 pylint/checkers/base/name_checker/naming_style.py | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/pylint/checkers/base/name_checker/naming_style.py b/pylint/checkers/base/name_checker/naming_style.py
index 98bdaf737b..9ef675ccc5 100644
--- a/pylint/checkers/base/name_checker/naming_style.py
+++ b/pylint/checkers/base/name_checker/naming_style.py
@@ -41,10 +41,9 @@ def get_regex(cls, name_type):
 class SnakeCaseStyle(NamingStyle):
     """Regex rules for snake_case naming style."""
 
-    CLASS_NAME_RGX = re.compile(r"[^\W\dA-Z][^\WA-Z]+$")
+    CLASS_NAME_RGX = COMP_VAR_RGX = re.compile(r"[^\W\dA-Z][^\WA-Z]+$")
     MOD_NAME_RGX = re.compile(r"[^\W\dA-Z][^\WA-Z]*$")
     CONST_NAME_RGX = re.compile(r"([^\W\dA-Z][^\WA-Z]*|__.*__)$")
-    COMP_VAR_RGX = re.compile(r"[^\W\dA-Z][^\WA-Z]*$")
     DEFAULT_NAME_RGX = re.compile(
         r"([^\W\dA-Z][^\WA-Z]{2,}|_[^\WA-Z]*|__[^\WA-Z\d_][^\WA-Z]+__)$"
     )
@@ -55,9 +54,8 @@ class CamelCaseStyle(NamingStyle):
     """Regex rules for camelCase naming style."""
 
     CLASS_NAME_RGX = re.compile(r"[^\W\dA-Z][^\W_]+$")
-    MOD_NAME_RGX = re.compile(r"[^\W\dA-Z][^\W_]*$")
+    MOD_NAME_RGX = COMP_VAR_RGX = re.compile(r"[^\W\dA-Z][^\W_]*$")
     CONST_NAME_RGX = re.compile(r"([^\W\dA-Z][^\W_]*|__.*__)$")
-    COMP_VAR_RGX = re.compile(r"[^\W\dA-Z][^\W_]*$")
     DEFAULT_NAME_RGX = re.compile(r"([^\W\dA-Z][^\W_]{2,}|__[^\W\dA-Z_]\w+__)$")
     CLASS_ATTRIBUTE_RGX = re.compile(r"([^\W\dA-Z][^\W_]{2,}|__.*__)$")
 
@@ -65,10 +63,8 @@ class CamelCaseStyle(NamingStyle):
 class PascalCaseStyle(NamingStyle):
     """Regex rules for PascalCase naming style."""
 
-    CLASS_NAME_RGX = re.compile(r"[^\W\da-z][^\W_]+$")
-    MOD_NAME_RGX = re.compile(r"[^\W\da-z][^\W_]+$")
+    CLASS_NAME_RGX = MOD_NAME_RGX = COMP_VAR_RGX = re.compile(r"[^\W\da-z][^\W_]+$")
     CONST_NAME_RGX = re.compile(r"([^\W\da-z][^\W_]*|__.*__)$")
-    COMP_VAR_RGX = re.compile(r"[^\W\da-z][^\W_]+$")
     DEFAULT_NAME_RGX = re.compile(r"([^\W\da-z][^\W_]{2,}|__[^\W\dA-Z_]\w+__)$")
     CLASS_ATTRIBUTE_RGX = re.compile(r"[^\W\da-z][^\W_]{2,}$")
 
@@ -76,10 +72,8 @@ class PascalCaseStyle(NamingStyle):
 class UpperCaseStyle(NamingStyle):
     """Regex rules for UPPER_CASE naming style."""
 
-    CLASS_NAME_RGX = re.compile(r"[^\W\da-z][^\Wa-z]+$")
-    MOD_NAME_RGX = re.compile(r"[^\W\da-z][^\Wa-z]+$")
+    CLASS_NAME_RGX = MOD_NAME_RGX = COMP_VAR_RGX = re.compile(r"[^\W\da-z][^\Wa-z]+$")
     CONST_NAME_RGX = re.compile(r"([^\W\da-z][^\Wa-z]*|__.*__)$")
-    COMP_VAR_RGX = re.compile(r"[^\W\da-z][^\Wa-z]+$")
     DEFAULT_NAME_RGX = re.compile(r"([^\W\da-z][^\Wa-z]{2,}|__[^\W\dA-Z_]\w+__)$")
     CLASS_ATTRIBUTE_RGX = re.compile(r"[^\W\da-z][^\Wa-z]{2,}$")