chore: import upstream snapshot with attribution

paddle/ap/include/rt_module/function_method_class.h

@@ -0,0 +1,46 @@
+// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include "paddle/ap/include/adt/adt.h"
+#include "paddle/ap/include/axpr/builtin_class_instance.h"
+#include "paddle/ap/include/axpr/naive_class_ops.h"
+#include "paddle/ap/include/axpr/type.h"
+#include "paddle/ap/include/axpr/value.h"
+#include "paddle/ap/include/rt_module/function.h"
+#include "paddle/ap/include/rt_module/function_helper.h"
+
+namespace ap::rt_module {
+
+struct FunctionMethodClass {
+  using Self = Function;
+
+  static adt::Result<axpr::Value> Call(const axpr::Value& self_val,
+                                       const std::vector<axpr::Value>& args) {
+    ADT_LET_CONST_REF(self, self_val.template CastTo<Self>());
+    return FunctionHelper{}.Apply(self, args);
+  }
+};
+
+inline axpr::TypeImpl<axpr::BuiltinClassInstance<axpr::Value>>
+GetSoFunctionClass() {
+  static auto cls(axpr::MakeBuiltinClass<axpr::Value>(
+      "so_function", [&](const auto& DoEach) {
+        DoEach("__call__", &FunctionMethodClass::Call);
+      }));
+  return axpr::MakeGlobalNaiveClassOps<FunctionMethodClass::Self>(cls);
+}
+
+}  // namespace ap::rt_module