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<?php
namespace HTML5\Parser;
use HTML5\Elements;
/**
* Handles special-case rules for the DOM tree builder.
*
* Many tags have special rules that need to be accomodated on an
* individual basis. This class handles those rules.
*
* See section 8.1.2.4 of the spec.
*/
class TreeBuildingRules {
protected static $tags = array(
'li' => 1,
);
/**
* Build a new rules engine.
*
* @param \DOMDocument $doc
* The DOM document to use for evaluation and modification.
*/
public function __construct($doc) {
$this->doc = $doc;
}
/**
* Returns TRUE if the given tagname has special processing rules.
*/
public function hasRules($tagname) {
return isset(self::$tags[$tagname]);
}
/**
* Evaluate the rule for the current tag name.
*
* This may modify the existing DOM.
*
* @return \DOMElement
* The new Current DOM element.
*/
public function evaluate($new, $current) {
switch($new->tagName) {
case 'li':
return $this->handleLI($new, $current);
}
return $current;
}
protected function handleLI($ele, $current) {
if ($current->tagName == 'li') {
$current->parentNode->appendChild($ele);
return $ele;
}
// XXX FINISH
$current->appendChild($ele);
return $current;
}
}
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