private static RegexNode CreateQuantifier(QuantifierParams quantifierParams,
RegexNode child,
int index,
string pattern)
{
if (quantifierParams.Shorthand != null)
{
switch (quantifierParams.Shorthand)
{
case '?':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return(new LazyQuestionMark(child, index, pattern));
}
return(new PossessiveQuestionMark(child, index, pattern));
}
return(new GreedyQuestionMark(child, index, pattern));
case '*':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return(new LazyStar(child, index, pattern));
}
return(new PossessiveStar(child, index, pattern));
}
return(new GreedyStar(child, index, pattern));
case '+':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return(new LazyPlus(child, index, pattern));
}
return(new PossessivePlus(child, index, pattern));
}
return(new GreedyPlus(child, index, pattern));
}
}
Debug.Assert(quantifierParams.Min != null);
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return(new LazyQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern));
}
return(new PossessiveQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern));
}
return(new GreedyQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern));
}
private static RegexNode CreateQuantifier(QuantifierParams quantifierParams,
RegexNode child,
int index,
string pattern)
{
if (quantifierParams.Shorthand != null)
{
switch (quantifierParams.Shorthand)
{
case '?':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return new LazyQuestionMark(child, index, pattern);
}
return new PossessiveQuestionMark(child, index, pattern);
}
return new GreedyQuestionMark(child, index, pattern);
case '*':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return new LazyStar(child, index, pattern);
}
return new PossessiveStar(child, index, pattern);
}
return new GreedyStar(child, index, pattern);
case '+':
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return new LazyPlus(child, index, pattern);
}
return new PossessivePlus(child, index, pattern);
}
return new GreedyPlus(child, index, pattern);
}
}
Debug.Assert(quantifierParams.Min != null);
if (quantifierParams.Optional != null)
{
if (quantifierParams.Optional == '?')
{
return new LazyQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern);
}
return new PossessiveQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern);
}
return new GreedyQuantifier(quantifierParams.Min.Value, quantifierParams.Max, child, index, pattern);
}
