#ifndef ARGPARSER_TUPLE_ITERATION_H
#define ARGPARSER_TUPLE_ITERATION_H

#include <tuple>

// adapted from https://blog.tartanllama.xyz/exploding-tuples-fold-expressions/


namespace argparser::internal::tuple_foreach_impl {
    template<std::size_t... Idx>
    auto make_index_dispatcher(std::index_sequence<Idx...>) {
        return [](auto &&f) { (f(std::integral_constant<std::size_t, Idx>{}), ...); };
    }
    template<std::size_t N>
    auto make_index_dispatcher() {
        return make_index_dispatcher(std::make_index_sequence<N>{});
    }
}// namespace argparser::internal::tuple_foreach_impl

namespace argparser::internal {
    template<typename Tuple, typename Func>
    void tuple_foreach(Tuple &&t, Func &&f) {
        constexpr auto n = std::tuple_size<std::decay_t<Tuple>>::value;
        auto dispatcher = internal::tuple_foreach_impl::make_index_dispatcher<n>();
        dispatcher([&f, &t](auto idx) { f(std::get<idx>(std::forward<Tuple>(t)), idx); });
    }

}// namespace argparser::internal

#endif//ARGPARSER_TUPLE_ITERATION_H