function __construct(array $expansion, Map $tags, Map $scope)
{
$this->expansion = $this->compile($expansion, $scope);
if ($tags->contains('·unsafe')) {
$this->unsafe = false;
}
$this->recursive = $tags->contains('·recursion');
}
/**
* Checks an relation to the indicated user.
*
* @param integer $userid
*
* @return boolean True if a relation exists, false if not
*/
protected function getPlayerRelation($userid)
{
if (!$userid || !$this->userid) {
return false;
}
$this->loadPlayerRelations();
if ($this->players->size() > 0 && $this->players->contains($userid)) {
return true;
}
return false;
}
/**
* {@inheritdoc}
*/
public function groupBy(callable $discriminator) : MapInterface
{
if ($this->size() === 0) {
throw new GroupEmptySequenceException();
}
$map = null;
foreach ($this->values as $value) {
$key = $discriminator($value);
if ($map === null) {
$type = gettype($key);
$map = new Map($type === 'object' ? get_class($key) : $type, SequenceInterface::class);
}
if ($map->contains($key)) {
$map = $map->put($key, $map->get($key)->add($value));
} else {
$map = $map->put($key, new self($value));
}
}
return $map;
}
