home/alospiesjs/www/apis/youtube/vendor/phpoption/phpoption/src/PhpOption/LazyOption.php000060400000007762151163611270026024 0ustar00 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ namespace PhpOption; use Traversable; /** * @template T * * @extends Option */ final class LazyOption extends Option { /** @var callable(mixed...):(Option) */ private $callback; /** @var array */ private $arguments; /** @var Option|null */ private $option; /** * @template S * @param callable(mixed...):(Option) $callback * @param array $arguments * * @return LazyOption */ public static function create($callback, array $arguments = []): self { return new self($callback, $arguments); } /** * @param callable(mixed...):(Option) $callback * @param array $arguments */ public function __construct($callback, array $arguments = []) { if (!is_callable($callback)) { throw new \InvalidArgumentException('Invalid callback given'); } $this->callback = $callback; $this->arguments = $arguments; } public function isDefined(): bool { return $this->option()->isDefined(); } public function isEmpty(): bool { return $this->option()->isEmpty(); } public function get() { return $this->option()->get(); } public function getOrElse($default) { return $this->option()->getOrElse($default); } public function getOrCall($callable) { return $this->option()->getOrCall($callable); } public function getOrThrow(\Exception $ex) { return $this->option()->getOrThrow($ex); } public function orElse(Option $else) { return $this->option()->orElse($else); } public function ifDefined($callable) { $this->option()->forAll($callable); } public function forAll($callable) { return $this->option()->forAll($callable); } public function map($callable) { return $this->option()->map($callable); } public function flatMap($callable) { return $this->option()->flatMap($callable); } public function filter($callable) { return $this->option()->filter($callable); } public function filterNot($callable) { return $this->option()->filterNot($callable); } public function select($value) { return $this->option()->select($value); } public function reject($value) { return $this->option()->reject($value); } /** * @return Traversable */ public function getIterator(): Traversable { return $this->option()->getIterator(); } public function foldLeft($initialValue, $callable) { return $this->option()->foldLeft($initialValue, $callable); } public function foldRight($initialValue, $callable) { return $this->option()->foldRight($initialValue, $callable); } /** * @return Option */ private function option(): Option { if (null === $this->option) { /** @var mixed */ $option = call_user_func_array($this->callback, $this->arguments); if ($option instanceof Option) { $this->option = $option; } else { throw new \RuntimeException(sprintf('Expected instance of %s', Option::class)); } } return $this->option; } }