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<?php |
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/** |
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* Classes en rapport avec les observers |
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* @author Vermeulen Maxime <[email protected]> |
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* @version 1.0 |
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*/ |
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namespace BFW; |
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use \Exception; |
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use \SplSubject; |
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/** |
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* Classe Observer |
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* @package bfw |
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*/ |
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class Observer implements \SplObserver |
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{ |
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/** |
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* Méthode par défaut appelé lorsque l'observer se déclanche |
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* |
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* @param SplSubject $subject Le sujet déclanchant l'observer |
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*/ |
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public function update(SplSubject $subject) |
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{ |
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} |
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/** |
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* Méthode appelé lorsque l'observer se déclanche via la classe Kernel |
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* |
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* @param SplSubject $subject Le sujet déclanchant l'observer |
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* @param string $action L'action à faire lors du déclanchement |
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* |
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* @throws \Exception : Si le paramètre $subject n'est pas un objet ou n'est pas une instance de \BFW\Kernel |
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*/ |
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public function updateWithAction($subject, $action) |
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{ |
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if(!is_object($subject)) |
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{ |
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throw new Exception('Le paramètre $subject doit être un objet.'); |
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} |
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elseif(is_object($subject) && get_class($subject) != '\SplSubject') |
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{ |
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throw new Exception('Le paramètre $subject doit être un objet de type \SplSubject.'); |
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} |
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//Gestion de l'action. |
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/* |
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* $action : |
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* Maclass::MaMethode() |
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* Maclass->MaMethode() |
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* MaFonction() |
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*/ |
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//Il faut gérer la porter des variables (classe/arguments) |
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$class = null; |
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$args = null; |
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$match = array(); |
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$regex = '([0-9a-zA-Z.,_-]+)'; |
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$regex2 = '([0-9a-zA-Z.,_-]*)'; |
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if(strpos($action, '::') !== false) |
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{ |
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$preg_match = preg_match('^'.$regex.'::'.$regex.'\('.$regex2.'\);$', $action, $match); |
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$class = $match[1]; |
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$args = $match[3]; |
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} |
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elseif(strpos($action, '->') !== false) |
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{ |
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$preg_match = preg_match('^'.$regex.'::'.$regex.'\('.$regex2.'\);$', $action, $match); |
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$class = $match[1]; |
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$args = $match[3]; |
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} |
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else |
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{ |
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$preg_match = preg_match('^'.$regex.'\('.$regex2.'\);$', $action, $match); |
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$args = $match[2]; |
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} |
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if(!is_null($class)) |
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{ |
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$class = str_replace('$', '', $class); |
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global ${$class}; |
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} |
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if(!is_null($args)) |
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{ |
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$args = explode(',', $args); |
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foreach($args as $arg) |
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{ |
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$arg = str_replace('$', '', $arg); |
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global ${$arg}; |
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} |
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} |
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try |
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{ |
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eval($action); |
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} |
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catch(\Exception $e) |
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{ |
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echo $e->getMessage(); |
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} |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.