/*
Copyright 2020 The OneFlow 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.
*/
#ifndef ONEFLOW_API_PYTHON_AUTOGRAD_AUTOGRAD_FUNCTION_STATE_H_
#define ONEFLOW_API_PYTHON_AUTOGRAD_AUTOGRAD_FUNCTION_STATE_H_

#include <Python.h>
#include <pybind11/pybind11.h>

#include "oneflow/core/framework/op_expr_grad_function.h"

namespace oneflow {
namespace one {

typedef struct {
  PyObject_HEAD;
  PyObject* dynamic_attr_dict;
  std::weak_ptr<FunctionAutoGradCaptureState> data;
} PyAutogradFunctionState;

extern PyTypeObject PyAutogradFunctionState_Type;

inline bool PyAutogradFunctionState_Check(PyObject* state) {
  return PyObject_TypeCheck(state, &PyAutogradFunctionState_Type);
}

PyObject* PyAutogradFunctionState_NewFromPtr(
    const std::shared_ptr<FunctionAutoGradCaptureState>& data);

}  // namespace one
}  // namespace oneflow

#endif  // ONEFLOW_API_PYTHON_AUTOGRAD_AUTOGRAD_FUNCTION_STATE_H_
