From bffc8dec65459440bcd00c830f1e1c37874450a1 Mon Sep 17 00:00:00 2001
From: Yury Pliner <yury.pliner@gmail.com>
Date: Mon, 11 Dec 2023 04:09:37 +0000
Subject: [PATCH] Cache get_pre_loads results

---
 marshmallow_recipe/hooks.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/marshmallow_recipe/hooks.py b/marshmallow_recipe/hooks.py
index 55f0469..0d3f53a 100644
--- a/marshmallow_recipe/hooks.py
+++ b/marshmallow_recipe/hooks.py
@@ -4,6 +4,7 @@
 
 _PRE_LOAD_KEY = "__marshmallow_recipe_pre_load__"
 _PRE_LOAD_CLASS_KEY = "__marshmallow_recipe_pre_load_class__"
+_PRE_LOADS_CACHE = {}
 
 
 def pre_load(fn: collections.abc.Callable[..., Any]) -> collections.abc.Callable[..., Any]:
@@ -12,12 +13,17 @@ def pre_load(fn: collections.abc.Callable[..., Any]) -> collections.abc.Callable
 
 
 def get_pre_loads(cls: type) -> list[collections.abc.Callable[..., Any]]:
+    existing = _PRE_LOADS_CACHE.get(cls)
+    if existing is not None:
+        return existing
+
     result = []
     for _, method in inspect.getmembers(cls):
         if hasattr(method, _PRE_LOAD_KEY):
             result.append(method)
     for fn in getattr(cls, _PRE_LOAD_CLASS_KEY, []):
         result.append(fn)
+    _PRE_LOADS_CACHE[cls] = result
     return result