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<?php
/**
* Factory for token generation.
*
* @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.
* 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).
* @todo Port DirectLex to use this
*/
class HTMLPurifier_TokenFactory
{
// p stands for prototype
/**
* @type HTMLPurifier_Token_Start
*/
private $p_start;
/**
* @type HTMLPurifier_Token_End
*/
private $p_end;
/**
* @type HTMLPurifier_Token_Empty
*/
private $p_empty;
/**
* @type HTMLPurifier_Token_Text
*/
private $p_text;
/**
* @type HTMLPurifier_Token_Comment
*/
private $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 string $name Tag name
* @param array $attr Associative array of attributes
* @return HTMLPurifier_Token_Start Generated HTMLPurifier_Token_Start
*/
public function createStart($name, $attr = array())
{
$p = clone $this->p_start;
$p->__construct($name, $attr);
return $p;
}
/**
* Creates a HTMLPurifier_Token_End.
* @param string $name Tag name
* @return HTMLPurifier_Token_End Generated HTMLPurifier_Token_End
*/
public function createEnd($name)
{
$p = clone $this->p_end;
$p->__construct($name);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Empty.
* @param string $name Tag name
* @param array $attr Associative array of attributes
* @return HTMLPurifier_Token_Empty Generated HTMLPurifier_Token_Empty
*/
public function createEmpty($name, $attr = array())
{
$p = clone $this->p_empty;
$p->__construct($name, $attr);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Text.
* @param string $data Data of text token
* @return HTMLPurifier_Token_Text Generated HTMLPurifier_Token_Text
*/
public function createText($data)
{
$p = clone $this->p_text;
$p->__construct($data);
return $p;
}
/**
* Creates a HTMLPurifier_Token_Comment.
* @param string $data Data of comment token
* @return HTMLPurifier_Token_Comment Generated HTMLPurifier_Token_Comment
*/
public function createComment($data)
{
$p = clone $this->p_comment;
$p->__construct($data);
return $p;
}
}
// vim: et sw=4 sts=4