Add "reduce" model

pydantic_jsonlogic/__init__.py

@@ -149,3 +149,14 @@ class Map(BaseJSONLogicOperation):
         # The operation to be performed on each element of the array
         BaseJSONLogicOperation,
     ]
+
+
+class Reduce(BaseJSONLogicOperation):
+    reduce: tuple[
+        # An array or an operation that produces an array
+        list[Any] | Var | Missing | MissingSome | If | Merge | Filter | Map,
+        # The operation to be performed for each element of the array
+        BaseJSONLogicOperation,
+        # The initial accumulator value
+        Any,
+    ]

tests/test_fields.py

@@ -26,6 +26,7 @@
     NotEquals,
     NotNot,
     Or,
+    Reduce,
     StrictEquals,
     StrictNotEquals,
     Substr,
@@ -506,3 +507,27 @@ def test_filter(json: str) -> None:
 )
 def test_map(json: str) -> None:
     Map.model_validate_json(json)
+
+
+@pytest.mark.parametrize(
+    "json",
+    [
+        """{"reduce":[
+            {"var":"integers"},
+            {"+":[{"var":"current"}, {"var":"accumulator"}]},
+            0
+        ]}""",
+        """{"reduce":[
+            {"var":"integers"},
+            {"+":[{"var":"current"}, {"var":"accumulator"}]},
+            {"var": "start_with"}
+        ]}""",
+        """{"reduce":[
+            {"var":"integers"},
+            {"*":[{"var":"current"}, {"var":"accumulator"}]},
+            1
+        ]}""",
+    ],
+)
+def test_reduce(json: str) -> None:
+    Reduce.model_validate_json(json)