std::source_location::source_location

#include <iomanip>
#include <iostream>
#include <ranges>
#include <source_location>
#include <string_view>
#include <vector>
// Imprimeur de nom de type spécifique à GCC
#if (__GNUG__ >= 11)
template<typename T>
auto type_name_helper(const std::source_location s = std::source_location::current())
{
    using std::operator""sv;
    const std::string_view fun_name{s.function_name()};
    constexpr auto prefix{"[with T = "sv};
    const auto type_name_begin{fun_name.find(prefix)};
    if (""sv.npos == type_name_begin)
        return ""sv;
    const std::size_t first{type_name_begin + prefix.length()};
    return std::string_view{fun_name.cbegin() + first, fun_name.cend() - 1};
}
template<typename T>
auto type_name() { return type_name_helper<T>(); }
#endif
void print(std::string_view const comment, std::source_location const l)
{
    std::cout << comment << ":\n"
              << "  nom_fichier   : " << std::quoted(l.file_name()) << '\n'
              << "  nom_fonction : " << std::quoted(l.function_name()) << '\n'
              << "  ligne         : " << l.line() << '\n'
              << "  colonne       : " << l.column() << '\n';
}
int main()
{
    constexpr std::source_location default_constructed;
    print("construit par défaut", default_constructed);
    constexpr std::source_location current = std::source_location::current();
    print("actuel", current);
#if (__GNUG__ >= 11)
    const std::vector<std::vector<int>> v{{1,2}, {3,4,5}, {6}};
    auto jv = std::ranges::join_view(v);
    std::cout << '\n'
              << '[' << type_name<int>() << "]\n"
              << '[' << type_name<double*>() << "]\n"
              << '[' << type_name<decltype([](){})>() << "]\n"
              << '[' << type_name<decltype(type_name<int>())>() << "]\n"
              << '[' << type_name<decltype(jv)>() << "]\n";
#endif
}