type = $type;
$this->genericTypes = $genericTypes;
$this->variances = $variances;
}
public function __toString(): string
{
$genericTypes = [];
foreach ($this->genericTypes as $index => $type) {
$variance = $this->variances[$index] ?? self::VARIANCE_INVARIANT;
if ($variance === self::VARIANCE_INVARIANT) {
$genericTypes[] = (string) $type;
} elseif ($variance === self::VARIANCE_BIVARIANT) {
$genericTypes[] = '*';
} else {
$genericTypes[] = sprintf('%s %s', $variance, $type);
}
}
return $this->type . '<' . implode(', ', $genericTypes) . '>';
}
/**
* @param array $properties
*/
public static function __set_state(array $properties): self
{
$instance = new self($properties['type'], $properties['genericTypes'], $properties['variances'] ?? []);
if (isset($properties['attributes'])) {
foreach ($properties['attributes'] as $key => $value) {
$instance->setAttribute($key, $value);
}
}
return $instance;
}
}