public UUID()

in csharp/src/Containers/UUID.cs [612:656]
41 lines of code
15 McCabe index (conditional complexity)

		public UUID(IReadOnlyString str, int offset = 0, UUIDParseFormat format = UUIDParseFormat.Any)
		{
			if (str == null)
				throw new ArgumentNullException(nameof(str));
			if (str.Length < offset + 32)
				throw new ArgumentException("UUID is too short.", nameof(str));

			if (format == UUIDParseFormat.Any)
				format = str[offset + 8] == '-' ? UUIDParseFormat.AnyCase : UUIDParseFormat.AnyCaseWithoutDashes;

			switch (format)
			{
				case UUIDParseFormat.LowerCase:
				case UUIDParseFormat.UpperCase:
				case UUIDParseFormat.AnyCase:
					{
						ulong m = Extract(str, offset, 8, 0UL, format);
						if (str[offset + 8] != '-')
							throw new ArgumentException("UUID is improperly formatted", str.ToString());
						m = Extract(str, offset + 9, 4, m, format);
						if (str[offset + 13] != '-')
							throw new ArgumentException("UUID is improperly formatted", str.ToString());
						m = Extract(str, offset + 14, 4, m, format);
						if (str[offset + 18] != '-')
							throw new ArgumentException("UUID is improperly formatted", str.ToString());

						ulong l = Extract(str, offset + 19, 4, 0L, format);
						if (str[offset + 23] != '-')
							throw new ArgumentException("UUID is improperly formatted", str.ToString());
						l = Extract(str, offset + 24, 12, l, format);

						MSB = m;
						LSB = l;
						break;
					}
				case UUIDParseFormat.LowerCaseWithoutDashes:
				case UUIDParseFormat.UpperCaseWithoutDashes:
				case UUIDParseFormat.AnyCaseWithoutDashes:
					MSB = Extract(str, offset, 16, 0L, format);
					LSB = Extract(str, offset + 16, 16, 0L, format);
					break;
				default:
					throw new ArgumentException("Unsupported format", format.ToString());
			}
		}