public CharacterClass(CharacterBuffer buffer)
{
//this.Image = ImageType.CharacterClass;
this.Start = buffer.IndexInOriginalBuffer;
if (buffer.IsAtEnd)
{
Utility.ParseError("CharacterClass: Reached end of buffer looking for a character!", buffer);
this.IsValid = false;
}
int currentIndex = buffer.CurrentIndex;
ParsedCharacterClass parsedCharacterClass = buffer.GetParsedCharacterClass();
if (parsedCharacterClass.Count == 0)
{
this.Description = parsedCharacterClass.ErrorMessage;
buffer.MoveTo(currentIndex + 1);
this.End = buffer.IndexInOriginalBuffer;
this.Literal = "[";
this.IsValid = false;
return;
}
int num = buffer.CurrentIndex - currentIndex;
Match match = CharacterClass.ClassRegex.Match(buffer.Substring(currentIndex, num));
if (!match.Success)
{
this.Description = "Invalid Character Class";
this.IsValid = false;
this.Literal = "[";
}
else
{
if (match.Groups["Negate"].Value != "^")
{
this.Negate = false;
this.MatchIfAbsent = false;
}
else
{
this.Negate = true;
this.MatchIfAbsent = true;
}
if (match.Groups["Contents"].Value.Length == 0)
{
this.Description = "Character class is empty";
this.IsValid = false;
}
else
{
this.Content = match.Groups["Contents"].Value;
}
this.Literal = match.Value;
}
if (this.IsValid)
{
if (!this.Negate)
{
this.Description = string.Concat("Any character in this class: ", this.Literal);
}
else
{
this.Description = string.Concat("Any character that is NOT in this class: ", this.Literal.Remove(1, 1));
}
}
base.ParseRepetitions(buffer);
}
public void ParseRepetitions(CharacterBuffer buffer)
{
int currentIndex = buffer.CurrentIndex;
buffer.SkipWhiteSpace();
if (buffer.IsAtEnd)
{
RepeatType = Repeat.Once;
buffer.MoveTo(currentIndex);
End = buffer.IndexInOriginalBuffer;
return;
}
char current = buffer.CurrentCharacter;
switch (current)
{
case '*':
{
this.RepeatType = Repeat.Any;
Element element = this;
element.Literal = string.Concat(element.Literal, buffer.CurrentCharacter);
buffer.MoveNext();
break;
}
case '+':
{
this.RepeatType = Repeat.OneOrMore;
Element element1 = this;
element1.Literal = string.Concat(element1.Literal, buffer.CurrentCharacter);
buffer.MoveNext();
break;
}
default:
{
if (current == '?')
{
this.RepeatType = Repeat.ZeroOrOne;
Element element2 = this;
element2.Literal = string.Concat(element2.Literal, buffer.CurrentCharacter);
buffer.MoveNext();
break;
}
else
{
if (current != '{')
{
this.RepeatType = Repeat.Once;
buffer.MoveTo(currentIndex);
this.End = buffer.IndexInOriginalBuffer;
return;
}
this.ParseBrackets(buffer);
break;
}
}
}
currentIndex = buffer.CurrentIndex;
buffer.SkipWhiteSpace();
if (buffer.IsAtEnd || buffer.CurrentCharacter != '?')
{
buffer.MoveTo(currentIndex);
}
else
{
this.AsFewAsPossible = true;
Element element3 = this;
element3.Literal = string.Concat(element3.Literal, buffer.CurrentCharacter);
buffer.MoveNext();
}
this.End = buffer.IndexInOriginalBuffer;
}
