From 9bd642de7ffd7c29b34ea1ac6b2090ed782138c3 Mon Sep 17 00:00:00 2001
From: Olivier Dony <odo@odoo.com>
Date: Thu, 24 Nov 2022 14:29:32 +0000
Subject: [PATCH] [FIX] tools/transpiler: avoid nested quantifiers

It made the regex much slower in case of non-match, due to backtracking.

closes odoo/odoo#108046

X-original-commit: 56b1b17d6fdf493368ce219f981f94d9efdc9b7f
Signed-off-by: Simon Genin (ges@odoo) <ges@odoo.com>
---
 odoo/tools/js_transpiler.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/odoo/tools/js_transpiler.py b/odoo/tools/js_transpiler.py
index 19d26a62333..f494853380e 100644
--- a/odoo/tools/js_transpiler.py
+++ b/odoo/tools/js_transpiler.py
@@ -402,7 +402,7 @@ IMPORT_BASIC_RE = re.compile(r"""
     ^
     (?P<space>\s*)                      # space and empty line
     import\s+                           # import
-    (?P<object>{(\s*\w+\s*,?\s*)+})\s*  # { a, b, c as x, ... }
+    (?P<object>{[\s\w,]+})\s*           # { a, b, c as x, ... }
     from\s*                             # from
     (?P<path>(?P<quote>["'`])([^"'`]+)(?P=quote))   # "file path" ("some/path")
     """, re.MULTILINE | re.VERBOSE)
@@ -484,7 +484,7 @@ IMPORT_DEFAULT_AND_NAMED_RE = re.compile(r"""
     (?P<space>\s*)                                  # space and empty line
     import\s+                                       # import
     (?P<default_export>\w+)\s*,\s*                  # default variable name,
-    (?P<named_exports>{(\s*\w+\s*,?\s*)+})\s*       # { a, b, c as x, ... }
+    (?P<named_exports>{[\s\w,]+})\s*                # { a, b, c as x, ... }
     from\s*                                         # from
     (?P<path>(?P<quote>["'`])([^"'`]+)(?P=quote))   # "file path" ("some/path")
     """, re.MULTILINE | re.VERBOSE)