From 47b574f39248e2ff68a124435e335dd3652bd3ad Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Fri, 18 Mar 2022 00:40:33 -0500
Subject: [PATCH] PersistentDict: add generic KeyBuilder.update_for_type

---
 pytools/persistent_dict.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pytools/persistent_dict.py b/pytools/persistent_dict.py
index a42ab635..4836d7f3 100644
--- a/pytools/persistent_dict.py
+++ b/pytools/persistent_dict.py
@@ -272,6 +272,11 @@ def __call__(self, key):
 
     # {{{ updaters
 
+    @staticmethod
+    def update_for_type(key_hash, key):
+        key_hash.update(
+            f"{key.__module__}.{key.__qualname__}.{key.__name__}".encode("utf-8"))
+
     @staticmethod
     def update_for_int(key_hash, key):
         sz = 8