Deprecate PersistentHashWalkMapper

inducer · Sep 23, 2024 · b77e590 · b77e590
1 parent 42943fd
commit b77e590
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/pymbolic/mapper/persistent_hash.py b/pymbolic/mapper/persistent_hash.py
@@ -21,6 +21,7 @@
 """
 
 
+from warnings import warn
 from pymbolic.mapper import WalkMapper
 
 
@@ -33,6 +34,12 @@ class PersistentHashWalkMapper(WalkMapper):
     def __init__(self, key_hash):
         self.key_hash = key_hash
 
+        warn("PersistentHashWalkMapper is deprecated. "
+             "Since they are dataclasses, expression objects should now "
+             "support persistent hashing natively without any help. "
+             "It will be removed in 2026.",
+             DeprecationWarning, stacklevel=2)
+
     def visit(self, expr):
         self.key_hash.update(type(expr).__name__.encode("utf8"))
         return True