AvalonStudio.TextEditor.Document.TextDocument.ThrowIfRangeInvalid C# (CSharp) Method

		private void ThrowIfRangeInvalid(int offset, int length)
		{
			if (offset < 0 || offset > rope.Length)
			{
				throw new ArgumentOutOfRangeException("offset", offset,
					"0 <= offset <= " + rope.Length.ToString(CultureInfo.InvariantCulture));
			}
			if (length < 0 || offset + length > rope.Length)
			{
				throw new ArgumentOutOfRangeException("length", length,
					"0 <= length, offset(" + offset + ")+length <= " + rope.Length.ToString(CultureInfo.InvariantCulture));
			}
		}