home/alospiesjs/www/apis/youtube/vendor/classpreloader/classpreloader/src/ClassLoader/ClassList.php000060400000005333151163771410030032 0ustar00 * (c) Michael Dowling * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace ClassPreloader\ClassLoader; /** * This is the class list class. * * This maintains a list of classes using a sort of doubly-linked list. * * @internal */ final class ClassList { /** * The head node of the list. * * @var \ClassPreloader\ClassLoader\ClassNode */ private $head; /** * The current node of the list. * * @var \ClassPreloader\ClassLoader\ClassNode */ private $current; /** * Create a new class list instance. * * @return void */ public function __construct() { $this->clear(); } /** * Clear the contents of the list and reset the head node and current node. * * @return void */ public function clear() { $this->head = new ClassNode(); $this->current = $this->head; } /** * Traverse to the next node in the list. * * @return void */ public function next() { if (isset($this->current->next)) { $this->current = $this->current->next; } else { $this->current->next = new ClassNode(null, $this->current); $this->current = $this->current->next; } } /** * Insert a value at the current position in the list. * * Any currently set value at this position will be pushed back in the list * after the new value. * * @param string $value * * @return void */ public function push(string $value) { if ($this->current->value === null) { $this->current->value = $value; } else { $temp = $this->current; $this->current = new ClassNode($value, $temp->prev); $this->current->next = $temp; $temp->prev = $this->current; if ($temp === $this->head) { $this->head = $this->current; } else { assert($this->current->prev !== null); $this->current->prev->next = $this->current; } } } /** * Traverse the ClassList and return a list of classes. * * @return string[] */ public function getClasses() { $classes = []; $current = $this->head; while ($current !== null && $current->value !== null) { $classes[] = $current->value; $current = $current->next; } return array_filter($classes); } }