venv/lib/python3.11/site-packages/pyarrow/src/arrow/python/csv.cc

// 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.

#include "csv.h"

#include <memory>

#include "arrow/python/common.h"

namespace arrow {

using csv::InvalidRow;
using csv::InvalidRowHandler;
using csv::InvalidRowResult;

namespace py {
namespace csv {

InvalidRowHandler MakeInvalidRowHandler(PyInvalidRowCallback cb, PyObject* py_handler) {
  if (cb == nullptr) {
    return InvalidRowHandler{};
  }

  struct Handler {
    PyInvalidRowCallback cb;
    std::shared_ptr<OwnedRefNoGIL> handler_ref;

    InvalidRowResult operator()(const InvalidRow& invalid_row) {
      InvalidRowResult result;
      auto st = SafeCallIntoPython([&]() -> Status {
        result = cb(handler_ref->obj(), invalid_row);
        if (PyErr_Occurred()) {
          PyErr_WriteUnraisable(handler_ref->obj());
        }
        return Status::OK();
      });
      ARROW_UNUSED(st);
      return result;
    }
  };

  Py_INCREF(py_handler);
  return Handler{cb, std::make_shared<OwnedRefNoGIL>(py_handler)};
}

}  // namespace csv
}  // namespace py
}  // namespace arrow