/// <summary>
/// Пересечение двух диапазонов.
/// </summary>
public NumberRange Intersect
(
NumberRange other
)
{
return(new NumberRange
(
Stop,
other.Start
));
}
/// <summary>
/// Объединение двух диапазонов.
/// </summary>
public NumberRange Union
(
NumberRange other
)
{
return(new NumberRange
(
NumberText.Min(Start, other.Start),
NumberText.Max(Stop, other.Stop)
));
}
/// <summary>
/// Добавление диапазона в набор.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
public NumberRangeCollection Add
(
NumberRange range
)
{
if (ReferenceEquals(range, null))
{
throw new ArgumentNullException("range");
}
_items.Add(range);
return(this);
}
private NumberRangeCollection
(
NumberRangesParser.ProgramContext program
)
: this()
{
foreach (NumberRangesParser.ItemContext itemContext
in program.item())
{
NumberRange range = new NumberRange(itemContext);
_items.Add(range);
}
}
/// <summary>
/// Разбор текстового представления диапазона.
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static NumberRange Parse
(
string text
)
{
if (string.IsNullOrEmpty(text))
{
throw new ArgumentNullException("text");
}
text = text.Trim();
if (string.IsNullOrEmpty(text))
{
throw new ArgumentNullException("text");
}
NumberRange result;
if (text.Contains("-"))
{
string[] parts = text.Split('-');
if (parts.Length != 2)
{
throw new FormatException("text");
}
parts[0] = parts[0].Trim();
parts[1] = parts[1].Trim();
if (string.IsNullOrEmpty(parts[0]) ||
string.IsNullOrEmpty(parts[1]))
{
throw new FormatException("text");
}
result = new NumberRange
(
parts[0],
parts[1]
);
}
else
{
result = new NumberRange(text);
}
return(result);
}