strings_column_view.hpp

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/*
 * Copyright (c) 2019-2024, NVIDIA CORPORATION.
 *
 * 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.
 */
#pragma once
 
#include <cudf/column/column_view.hpp>
#include <cudf/utilities/default_stream.hpp>
#include <cudf/utilities/export.hpp>
 
namespace CUDF_EXPORT cudf {
 
class strings_column_view : private column_view {
 public:
  strings_column_view(column_view strings_column);
  strings_column_view(strings_column_view&&)      = default;  
  strings_column_view(strings_column_view const&) = default;  
  ~strings_column_view() override                 = default;
  strings_column_view& operator=(strings_column_view const&) = default;
  strings_column_view& operator=(strings_column_view&&) = default;
 
  static constexpr size_type offsets_column_index{0};  
 
  using column_view::has_nulls;
  using column_view::is_empty;
  using column_view::null_count;
  using column_view::null_mask;
  using column_view::offset;
  using column_view::size;
 
  using offset_iterator = size_type const*;  
  using chars_iterator  = char const*;       
 
  [[nodiscard]] column_view parent() const;
 
  [[nodiscard]] column_view offsets() const;
 
  [[nodiscard]] int64_t chars_size(rmm::cuda_stream_view stream) const noexcept;
 
  [[nodiscard]] chars_iterator chars_begin(rmm::cuda_stream_view) const;
 
  [[nodiscard]] chars_iterator chars_end(rmm::cuda_stream_view stream) const;
};
 
namespace strings {
}  // namespace strings
  // end of group
}  // namespace CUDF_EXPORT cudf