public static new LexemSwitch Parse(ref string text)
{
if (String.IsNullOrEmpty(text))
return null;
text = text.Trim();
if (!text.StartsWith("?") && !text.StartsWith(":"))
return null;
var result = new LexemSwitch(text[0].ToString());
text = text.Crop(1);
return result;
}
protected abstract void OnSwitch(LexemSwitch lexem, LexemList condition, LexemList then, LexemList other);
protected override void OnSwitch(LexemSwitch lexem, LexemList condition, LexemList then, LexemList other)
{
this.AnalysLogical(condition);
_lexems.Add(lexem);
this.AnalysExpression(then);
_lexems.Add(lexem.Simetric);
this.AnalysExpression(other);
lexem.End = _lexems[_lexems.Count - 1];
}