Method get_ubjson_size_value

Source/external/json.hpp:11083–11293

! @param[out] result determined size @param[in,out] is_ndarray for input, `true` means already inside an ndarray vector or ndarray dimension is not allowed; `false` means ndarray is allowed; for output, `true` means an ndarray is found; is_ndarray can only return `true` when its initial value is `false` @param[in] prefix type marker if already read, ot

	@return whether size determination completed
	*/
	bool get_ubjson_size_value(std::size_t& result, bool& is_ndarray, char_int_type prefix = 0)
	{
		if (prefix == 0)
		{
			prefix = get_ignore_noop();
		}

		switch (prefix)
		{
			case 'U':
			{
				std::uint8_t number{};
				if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
				{
					return false;
				}
				result = static_cast<std::size_t>(number);
				return true;
			}

			case 'i':
			{
				std::int8_t number{};
				if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
				{
					return false;
				}
				if (number < 0)
				{
					return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
											exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
				}
				result = static_cast<std::size_t>(number); // NOLINT(bugprone-signed-char-misuse,cert-str34-c): number is not a char
				return true;
			}

			case 'I':
			{
				std::int16_t number{};
				if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
				{
					return false;
				}
				if (number < 0)
				{
					return sax->parse_error(chars_read, get_token_string(), parse_error::create(113, chars_read,
											exception_message(input_format, "count in an optimized container must be positive", "size"), nullptr));
				}
				result = static_cast<std::size_t>(number);
				return true;
			}

			case 'l':
			{
				std::int32_t number{};
				if (JSON_HEDLEY_UNLIKELY(!get_number(input_format, number)))
				{
					return false;