Method ubjson_prefix

Source/Utils/json.hpp:14128–14206

! @brief determine the type prefix of container values */

            @brief determine the type prefix of container values
            */
            CharType ubjson_prefix(const BasicJsonType& j) const noexcept
            {
                switch (j.type())
                {
                case value_t::null:
                    return 'Z';

                case value_t::boolean:
                    return j.m_value.boolean ? 'T' : 'F';

                case value_t::number_integer:
                {
                    if ((std::numeric_limits<std::int8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int8_t>::max)())
                    {
                        return 'i';
                    }
                    if ((std::numeric_limits<std::uint8_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::uint8_t>::max)())
                    {
                        return 'U';
                    }
                    if ((std::numeric_limits<std::int16_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int16_t>::max)())
                    {
                        return 'I';
                    }
                    if ((std::numeric_limits<std::int32_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int32_t>::max)())
                    {
                        return 'l';
                    }
                    if ((std::numeric_limits<std::int64_t>::min)() <= j.m_value.number_integer && j.m_value.number_integer <= (std::numeric_limits<std::int64_t>::max)())
                    {
                        return 'L';
                    }
                    // anything else is treated as high-precision number
                    return 'H'; // LCOV_EXCL_LINE
                }

                case value_t::number_unsigned:
                {
                    if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int8_t>::max)()))
                    {
                        return 'i';
                    }
                    if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::uint8_t>::max)()))
                    {
                        return 'U';
                    }
                    if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int16_t>::max)()))
                    {
                        return 'I';
                    }
                    if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
                    {
                        return 'l';
                    }
                    if (j.m_value.number_unsigned <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
                    {
                        return 'L';
                    }