cpp/src/arrow/csv/converter.h

// Licensed to the Apache Software Foundation (ASF) under one
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// 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
//
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// software distributed under the License is distributed on an
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#ifndef ARROW_CSV_CONVERTER_H
#define ARROW_CSV_CONVERTER_H

#include <cstdint>
#include <memory>

#include "arrow/csv/options.h"
#include "arrow/util/macros.h"
#include "arrow/util/visibility.h"

namespace arrow {

class Array;
class DataType;
class MemoryPool;
class Status;

namespace csv {

class BlockParser;

class ARROW_EXPORT Converter {
 public:
  Converter(const std::shared_ptr<DataType>& type, const ConvertOptions& options,
            MemoryPool* pool);
  virtual ~Converter() = default;

  virtual Status Convert(const BlockParser& parser, int32_t col_index,
                         std::shared_ptr<Array>* out) = 0;

  std::shared_ptr<DataType> type() const { return type_; }

  static Status Make(const std::shared_ptr<DataType>& type, const ConvertOptions& options,
                     std::shared_ptr<Converter>* out);
  static Status Make(const std::shared_ptr<DataType>& type, const ConvertOptions& options,
                     MemoryPool* pool, std::shared_ptr<Converter>* out);

 protected:
  ARROW_DISALLOW_COPY_AND_ASSIGN(Converter);

  virtual Status Initialize() = 0;

  const ConvertOptions options_;
  MemoryPool* pool_;
  std::shared_ptr<DataType> type_;
};

}  // namespace csv
}  // namespace arrow

#endif  // ARROW_CSV_CONVERTER_H