algos.h

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#ifndef ALGOS_H
#define ALGOS_H
 
#include <algorithm>
#include <array>
#include <ranges>
#include <stdexcept>
#include <string>
#include <string_view>
#include <type_traits>
#include <utility>
 
namespace mazes
{
    enum class algo : unsigned int
    {
        BINARY_TREE = 0,
        SIDEWINDER = 1,
        DFS = 2,
        PIXELS = 3,
        STRINGIFY = 4,
        WAVEFRONT_OBJECT = 5,
        TOTAL = 6
    };
 
    constexpr std::array<std::string_view, static_cast<size_t>(algo::TOTAL)> ALGOS_LABELS_LOWERCASE = {
        "binary_tree",
        "sidewinder",
        "dfs",
        "pixels",
        "stringify",
        "wavefront_object"
    };
 
    inline std::string_view to_sv_from_algo(algo a)
    {
        if (a == algo::TOTAL)
        {
            throw std::invalid_argument("Invalid algo: " + std::to_string(static_cast<unsigned int>(a)));
        }
        return ALGOS_LABELS_LOWERCASE.at(static_cast<size_t>(a));
    }
 
    inline algo to_algo_from_sv(std::string_view a)
    {
        if (const auto it = std::ranges::find(ALGOS_LABELS_LOWERCASE, a); it != ALGOS_LABELS_LOWERCASE.end())
        {
            return static_cast<algo>(std::distance(ALGOS_LABELS_LOWERCASE.begin(), it));
        }
        throw std::invalid_argument("Invalid algo: " + std::string{a});
    }
} // namespace mazes
 
#endif // ALGOS_H