private Element ParseCharSet()
{
var repeat = true;
var flag = this.PeekChar(0) == Convert.ToInt32('^');
CharacterSetElement charset;
if (flag)
{
this.ReadChar('^');
charset = new CharacterSetElement(true);
}
else
{
charset = new CharacterSetElement(false);
}
while (this.PeekChar(0) > 0 && repeat)
{
var start = Convert.ToChar(this.PeekChar(0));
if (start != '\\')
{
if (start != ']')
{
this.ReadChar(start);
var flag2 = this.PeekChar(0) == Convert.ToInt32('-') && this.PeekChar(1) > 0 &&
this.PeekChar(1) != Convert.ToInt32(']');
if (flag2)
{
this.ReadChar('-');
var end = this.ReadChar();
charset.AddRange(this.FixChar(start), this.FixChar(end));
}
else
{
charset.AddCharacter(this.FixChar(start));
}
}
else
{
repeat = false;
}
}
else
{
var elem = this.ParseEscapeChar();
var flag3 = elem is StringElement;
if (flag3)
{
charset.AddCharacters((StringElement)elem);
}
else
{
charset.AddCharacterSet((CharacterSetElement)elem);
}
}
}
return(charset);
}
public void AddCharacterSet(CharacterSetElement elem)
{
this.contents.Add(elem);
}