protected function classFilter()
    {
        $className = "";

        if (!$this->match("/^\./")) {
            return false;
        }
        if (!list($className) = $this->is("identifier")) {
            throw new TextParserException("Invalid identifier", $this);
        }
        return new CssParserFilterClass($className);
    }
protected function classFilter()
    {
        $className = "";

        if (!$this->match("/^\./")) {
            return false;
        }
        if (!list($className) = $this->is("identifier")) {
            throw new TextParserException("Invalid identifier", $this);
        }
        return new CssParserFilterClass($className);
    }
protected function classFilter ( ) { $ className = "" ; if ( ! $ this -> match ( "/^\./" ) ) { return false ; } if ( ! list ( $ className ) = $ this -> is ( "identifier" ) ) { throw new TextParserException ( "Invalid identifier" , $ this ) ; } return new CssParserFilterClass ( $ className ) ; }
Is the next thing a class filter?

@return false|CssParserFilterClass
Is the next thing a class filter?