/**
* @param mixed $item
* @param CollectionInterface $collection
*
* @return bool
*/
public function __invoke($item, CollectionInterface $collection)
{
if (self::VALIDATE_KEY === $this->mode) {
return !$collection->has($item);
}
return !$collection->contains($item, $this->strict);
}
/**
* @param CollectionInterface $from
* @param CollectionInterface $to
*
* @return Collection
*/
private function getNew(CollectionInterface $from, CollectionInterface $to)
{
$added = [];
foreach ($to as $name => $element) {
if (!$from->has($name)) {
$added[$name] = $element;
}
}
return new Collection($added);
}
/**
* @return mixed
*/
public function execute()
{
if ($this->collection instanceof PipelineInterface) {
$collection = $this->collection->execute();
if (!$collection instanceof CollectionInterface) {
throw new \UnexpectedValueException('Expecting an instance of ' . CollectionInterface::class);
}
} else {
$collection = $this->collection;
}
return call_user_func($this->callback, $collection);
}
/**
* @param string $name
*
* @return CollectionInterface
*/
public function additional($name = null)
{
return isset($name) ? $this->newElements->get($name) : $this->newElements;
}
/**
* @param integer $index
* @param CollectionInterface $collection
*
* @return bool
*/
public function __invoke($index, CollectionInterface $collection)
{
return is_numeric($index) && $index <= $collection->count();
}