public override NFATransition Copy(NFAState state)
{
var copy = new NFACharRangeTransition(Inverse, IgnoreCase, state)
{
_contents = _contents
};
return(copy);
}
private NFAState ParseCharSet(NFAState start)
{
NFAState end = new NFAState();
NFACharRangeTransition range;
if (PeekChar(0) == '^')
{
ReadChar('^');
range = new NFACharRangeTransition(true, _ignoreCase, end);
}
else
{
range = new NFACharRangeTransition(false, _ignoreCase, end);
}
start.AddOut(range);
while (PeekChar(0) > 0)
{
var min = (char)PeekChar(0);
switch (min)
{
case ']':
return(end);
case '\\':
range.AddCharacter(ReadEscapeChar());
break;
default:
ReadChar(min);
if (PeekChar(0) == '-' &&
PeekChar(1) > 0 &&
PeekChar(1) != ']')
{
ReadChar('-');
var max = ReadChar();
range.AddRange(min, max);
}
else
{
range.AddCharacter(min);
}
break;
}
}
return(end);
}