Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/pyarrow/include/arrow/python/udf.h

@@ -0,0 +1,60 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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 "arrow/compute/exec.h"
+#include "arrow/compute/function.h"
+#include "arrow/compute/registry.h"
+#include "arrow/python/platform.h"
+
+#include "arrow/python/common.h"
+#include "arrow/python/pyarrow.h"
+#include "arrow/python/visibility.h"
+
+namespace arrow {
+
+namespace py {
+
+// TODO: TODO(ARROW-16041): UDF Options are not exposed to the Python
+// users. This feature will be included when extending to provide advanced
+// options for the users.
+struct ARROW_PYTHON_EXPORT ScalarUdfOptions {
+  std::string func_name;
+  compute::Arity arity;
+  compute::FunctionDoc func_doc;
+  std::vector<std::shared_ptr<DataType>> input_types;
+  std::shared_ptr<DataType> output_type;
+};
+
+/// \brief A context passed as the first argument of scalar UDF functions.
+struct ARROW_PYTHON_EXPORT ScalarUdfContext {
+  MemoryPool* pool;
+  int64_t batch_length;
+};
+
+using ScalarUdfWrapperCallback = std::function<PyObject*(
+    PyObject* user_function, const ScalarUdfContext& context, PyObject* inputs)>;
+
+/// \brief register a Scalar user-defined-function from Python
+Status ARROW_PYTHON_EXPORT RegisterScalarFunction(PyObject* user_function,
+                                                  ScalarUdfWrapperCallback wrapper,
+                                                  const ScalarUdfOptions& options);
+
+}  // namespace py
+
+}  // namespace arrow