<?phprequire_once 'HTMLPurifier/Token.php';/** * Factory for token generation (PHP 5 only). *  * @note Doing some benchmarking indicates that the new operator is much *       slower than the clone operator (even discounting the cost of the *       constructor).  This class is for that optimization.  We may want to *       consider porting this to PHP 4 by virtue of the fact it makes the code *       easier to read.  Other then that, there's not much point as we don't *       maintain parallel HTMLPurifier_Token hierarchies (the main reason why *       you'd want to use an abstract factory). */class HTMLPurifier_TokenFactory{        /**     * Prototypes that will be cloned.     * @private     */    // p stands for prototype    private $p_start, $p_end, $p_empty, $p_text, $p_comment;        /**     * Generates blank prototypes for cloning.     */    public function __construct() {        $this->p_start  = new HTMLPurifier_Token_Start('', array());        $this->p_end    = new HTMLPurifier_Token_End('');        $this->p_empty  = new HTMLPurifier_Token_Empty('', array());        $this->p_text   = new HTMLPurifier_Token_Text('');        $this->p_comment= new HTMLPurifier_Token_Comment('');    }        /**     * Creates a HTMLPurifier_Token_Start.     * @param $name Tag name     * @param $attr Associative array of attributes     * @return Generated HTMLPurifier_Token_Start     */    public function createStart($name, $attr = array()) {        $p = clone $this->p_start;        $p->HTMLPurifier_Token_Tag($name, $attr);        return $p;    }        /**     * Creates a HTMLPurifier_Token_End.     * @param $name Tag name     * @return Generated HTMLPurifier_Token_End     */    public function createEnd($name) {        $p = clone $this->p_end;        $p->HTMLPurifier_Token_Tag($name);        return $p;    }        /**     * Creates a HTMLPurifier_Token_Empty.     * @param $name Tag name     * @param $attr Associative array of attributes     * @return Generated HTMLPurifier_Token_Empty     */    public function createEmpty($name, $attr = array()) {        $p = clone $this->p_empty;        $p->HTMLPurifier_Token_Tag($name, $attr);        return $p;    }        /**     * Creates a HTMLPurifier_Token_Text.     * @param $data Data of text token     * @return Generated HTMLPurifier_Token_Text     */    public function createText($data) {        $p = clone $this->p_text;        $p->HTMLPurifier_Token_Text($data);        return $p;    }        /**     * Creates a HTMLPurifier_Token_Comment.     * @param $data Data of comment token     * @return Generated HTMLPurifier_Token_Comment     */    public function createComment($data) {        $p = clone $this->p_comment;        $p->HTMLPurifier_Token_Comment($data);        return $p;    }    }