Method next_byte_in_range

Source/external/json.hpp:7518–7538

! @brief check if the next byte(s) are inside a given range Adds the current byte and, for each passed range, reads a new byte and checks if it is inside the range. If a violation was detected, set up an error message and return false. Otherwise, return true. @param[in] ranges list of integers; interpreted as list of pairs of inclusive lower and upper bound, respectively @pre The

	@return true if and only if no range violation was detected
	*/
	bool next_byte_in_range(std::initializer_list<char_int_type> ranges)
	{
		JSON_ASSERT(ranges.size() == 2 || ranges.size() == 4 || ranges.size() == 6);
		add(current);

		for (auto range = ranges.begin(); range != ranges.end(); ++range)
		{
			get();
			if (JSON_HEDLEY_LIKELY(*range <= current && current <= *(++range)))
			{
				add(current);
			}
			else
			{
				error_message = "invalid string: ill-formed UTF-8 byte";
				return false;
			}
		}

		return true;
	}

	/*!
	@brief scan a string literal