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// BSD 3-Clause License; see https://github.com/scikit-hep/awkward/blob/main/LICENSE
#ifndef AWKWARD_BUILDEROPTIONS_H_
#define AWKWARD_BUILDEROPTIONS_H_
#include <cassert>
#include <cstring>
#include <tuple>
#include <type_traits>
#include <vector>
#include <stdint.h>
namespace awkward {
/// @class Options
///
/// @brief Container for all configuration options needed by ArrayBuilder,
/// GrowableBuffer, LayoutBuilder and the Builder subclasses.
template <typename... OPTIONS>
struct Options {
static constexpr std::size_t value = sizeof...(OPTIONS);
using OptionsPack = typename std::tuple<OPTIONS...>;
template<std::size_t INDEX>
using OptionType = std::tuple_element_t<INDEX, OptionsPack>;
/// @brief Creates an Options tuple from a full set of parameters.
Options(OPTIONS... options) : pars(options...) {}
/// @brief The initial number of
/// {@link GrowableBuffer#reserved reserved} entries for a GrowableBuffer.
int64_t
initial() const noexcept {
return option<0>();
}
/// @brief The factor with which a GrowableBuffer is resized
/// when its {@link GrowableBuffer#length length} reaches its
/// {@link GrowableBuffer#reserved reserved}.
double
resize() const noexcept {
return option<1>();
}
/// @brief Access to all other options.
template <std::size_t INDEX>
const OptionType<INDEX>&
option() const noexcept {
return std::get<INDEX>(pars);
}
OptionsPack pars;
};
using BuilderOptions = Options<int64_t, double>;
} // namespace awkward
#endif // AWKWARD_BUILDEROPTIONS_H_
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