internal static WildcardElement Create(string pattern, ref int patternIndex)
{
if (patternIndex >= pattern.Length)
{
return(null);
}
switch (pattern[patternIndex])
{
case '*':
return(WildcardAsteriskElement.Create(pattern, ref patternIndex));
case '?':
return(WildcardQuestionElement.Create(pattern, ref patternIndex));
case '#':
return(WildcardSharpElement.Create(pattern, ref patternIndex));
case '[':
{
int startIndex = patternIndex;
WildcardElement element = WildcardRangeElement.Create(pattern, ref patternIndex);
if (element == null)
{
patternIndex = startIndex;
element = WildcardStringElement.Create(pattern, ref patternIndex);
}
return(element);
}
default:
return(WildcardStringElement.Create(pattern, ref patternIndex));
}
}
internal new static WildcardAsteriskElement Create(string pattern, ref int patternIndex)
{
patternIndex++;
var element = new WildcardAsteriskElement();
element.Next = WildcardElement.Create(pattern, ref patternIndex);
return(element);
}