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Copy pathpython_to_arrow.h
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83 lines (64 loc) · 2.64 KB
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// 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.
// Functions for converting between CPython built-in data structures and Arrow
// data structures
#ifndef ARROW_PYTHON_ADAPTERS_BUILTIN_H
#define ARROW_PYTHON_ADAPTERS_BUILTIN_H
#include "arrow/python/platform.h"
#include <cstdint>
#include <memory>
#include "arrow/python/visibility.h"
#include "arrow/type.h"
#include "arrow/util/macros.h"
#include "arrow/python/common.h"
namespace arrow {
class Array;
class Status;
namespace py {
struct PyConversionOptions {
PyConversionOptions() : type(NULLPTR), size(-1), pool(NULLPTR), from_pandas(false) {}
PyConversionOptions(const std::shared_ptr<DataType>& type, int64_t size,
MemoryPool* pool, bool from_pandas)
: type(type), size(size), pool(default_memory_pool()), from_pandas(from_pandas) {}
// Set to null if to be inferred
std::shared_ptr<DataType> type;
// Default is -1: infer from data
int64_t size;
// Memory pool to use for allocations
MemoryPool* pool;
// Default false
bool from_pandas;
};
/// \brief Convert sequence (list, generator, NumPy array with dtype object) of
/// Python objects.
/// \param[in] obj the sequence to convert
/// \param[in] mask a NumPy array of true/false values to indicate whether
/// values in the sequence are null (true) or not null (false). This parameter
/// may be null
/// \param[in] options various conversion options
/// \param[out] out a ChunkedArray containing one or more chunks
/// \return Status
ARROW_PYTHON_EXPORT
Status ConvertPySequence(PyObject* obj, PyObject* mask,
const PyConversionOptions& options,
std::shared_ptr<ChunkedArray>* out);
ARROW_PYTHON_EXPORT
Status ConvertPySequence(PyObject* obj, const PyConversionOptions& options,
std::shared_ptr<ChunkedArray>* out);
} // namespace py
} // namespace arrow
#endif // ARROW_PYTHON_ADAPTERS_BUILTIN_H