Function parse_bare_key

Rapfi/external/cpptoml/include/cpptoml.h:2233–2270

    }

    std::string parse_bare_key(std::string::iterator& it,
                               const std::string::iterator& end)
    {
        if (it == end)
        {
            throw_parse_exception("Bare key missing name");
        }

        auto key_end = end;
        --key_end;
        consume_backwards_whitespace(key_end, it);
        ++key_end;
        std::string key{it, key_end};

        if (std::find(it, key_end, '#') != key_end)
        {
            throw_parse_exception("Bare key " + key + " cannot contain #");
        }

        if (std::find_if(it, key_end,
                         [](char c) { return c == ' ' || c == '\t'; })
            != key_end)
        {
            throw_parse_exception("Bare key " + key
                                  + " cannot contain whitespace");
        }

        if (std::find_if(it, key_end,
                         [](char c) { return c == '[' || c == ']'; })
            != key_end)
        {
            throw_parse_exception("Bare key " + key
                                  + " cannot contain '[' or ']'");
        }

        it = end;
        return key;
    }

    enum class parse_type
    {