private RepeatElement.RepeatType RepeatType(RepeatElement.RepeatType type)
{
var flag4 = this.PeekChar(0) == Convert.ToInt32('?');
if (flag4)
{
this.ReadChar('?');
type = RepeatElement.RepeatType.Reluctant;
}
else
{
var flag5 = this.PeekChar(0) == Convert.ToInt32('+');
if (flag5)
{
this.ReadChar('+');
type = RepeatElement.RepeatType.Possessive;
}
}
return(type);
}
//*
// * Parses a regular expression atom modifier. This method handles
// * the AtomModifier production in the grammar (see regexp.grammar).
// *
// * @param elem the element to modify
// *
// * @return the modified element
// *
// * @throws RegExpException if an error was encountered in the
// * pattern string
//
private Element ParseAtomModifier(Element elem)
{
int min = 0;
int max = -1;
RepeatElement.RepeatType type = default(RepeatElement.RepeatType);
int firstPos = 0;
// Read min and max
type = RepeatElement.RepeatType.GREEDY;
switch (ReadChar())
{
case '?':
min = 0;
max = 1;
break;
case '*':
min = 0;
max = -1;
break;
case '+':
min = 1;
max = -1;
break;
case '{':
firstPos = pos - 1;
min = ReadNumber();
max = min;
if (PeekChar(0) == Convert.ToInt32(','))
{
ReadChar(',');
max = -1;
if (PeekChar(0) != Convert.ToInt32('}'))
{
max = ReadNumber();
}
}
ReadChar('}');
if (max == 0 || (max > 0 && min > max))
{
throw new RegExpException(RegExpException.ErrorType.INVALID_REPEAT_COUNT, firstPos, pattern);
}
break;
default:
throw new RegExpException(RegExpException.ErrorType.UNEXPECTED_CHARACTER, pos - 1, pattern);
}
// Read operator mode
if (PeekChar(0) == Convert.ToInt32('?'))
{
ReadChar('?');
type = RepeatElement.RepeatType.RELUCTANT;
}
else if (PeekChar(0) == Convert.ToInt32('+'))
{
ReadChar('+');
type = RepeatElement.RepeatType.POSSESSIVE;
}
return(new RepeatElement(elem, min, max, type));
}
