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string_array_holder.hpp

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#pragma once

/**

* @file string_array_holder.hpp

* @brief Helper class to hold string array data.

*/

#include "array.hpp"

#include <string_view>

namespace nd {

class string_stream_array_holder

{

public:

string_stream_array_holder() = default;

explicit string_stream_array_holder(const nd::array& arr);

std::string_view data(int64_t index) const;

inline bool is_valid() const noexcept

{

return is_valid_;

}

private:

// Storage - kept as separate members for cache efficiency

nd::array vstack_holder_;

std::vector<int64_t> offsets_;

std::vector<int64_t> range_offsets_;

std::vector<const void*> holders_;

const void* dynamic_std_holder_ = nullptr;

const void* dynamic_icm_holder_ = nullptr;

bool is_valid_ = true;

void initialize(const nd::array& arr);

void initialize_single_range(const auto& range_adapter);

void initialize_complex(const nd::array& arr);

bool try_initialize_range_arrays(const auto& vstacked, const nd::array& fallback);

void clear_range_data();

std::string_view get_range_data(int64_t index) const;

std::string_view get_dynamic_data(int64_t index) const;

std::string_view get_vstack_data(int64_t index) const;

};

} // namespace nd