/// <summary>
/// Parses and checks a number from the string. Throws LoadingException if the string is not a correct number.
/// </summary>
/// <param name="text">String to be parsed.</param>
/// <param name="numberType">Input number type.</param>
/// <returns>Parsed number from the given string.</returns>
private int ParseAndCheckNumber(string text, InputNumberType numberType = InputNumberType.NonNegative)
{
int number;
bool valid = int.TryParse(text, out number);
if (!valid)
{
throw GetException($"Integer number expected, but '{text}' value found.");
}
if (number < 0)
{
if (numberType == InputNumberType.NonNegativeOrMinusOne)
{
if (number != -1)
{
throw GetException($"Non-negative integer or -1 number expected, but '{number}' found.");
}
}
else
{
throw GetException($"Non-negative integer number expected, but '{number}' found.");
}
}
return(number);
}
/// <summary>
/// Parses and checks a list of numbers from the string. Throws LoadingException if the string is not a correct list of numbers.
/// </summary>
/// <param name="text">String to be parsed.</param>
/// <returns>Parsed list of numbers from the given string.</returns>
private List <int> ParseAndCheckNumberList(string text)
{
List <int> retList = new List <int>();
string[] numbersList = SplitByWhiteSpaces(text);
if (numbersList.Length <= 1)
{
throw GetException($"List of numbers expected, but '{text}' found.");
}
for (int i = 0; i < numbersList.Length; ++i)
{
InputNumberType inputNumberType = (i == numbersList.Length - 2) ? InputNumberType.NonNegativeOrMinusOne
: InputNumberType.NonNegative;
retList.Add(ParseAndCheckNumber(numbersList[i], inputNumberType));
}
return(retList);
}