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- <?php
- namespace GuzzleHttp\Promise;
- /**
- * A promise that has been fulfilled.
- *
- * Thenning off of this promise will invoke the onFulfilled callback
- * immediately and ignore other callbacks.
- */
- class FulfilledPromise implements PromiseInterface
- {
- private $value;
- public function __construct($value)
- {
- if (method_exists($value, 'then')) {
- throw new \InvalidArgumentException(
- 'You cannot create a FulfilledPromise with a promise.');
- }
- $this->value = $value;
- }
- public function then(
- callable $onFulfilled = null,
- callable $onRejected = null
- ) {
- // Return itself if there is no onFulfilled function.
- if (!$onFulfilled) {
- return $this;
- }
- $queue = queue();
- $p = new Promise([$queue, 'run']);
- $value = $this->value;
- $queue->add(static function () use ($p, $value, $onFulfilled) {
- if ($p->getState() === self::PENDING) {
- try {
- $p->resolve($onFulfilled($value));
- } catch (\Throwable $e) {
- $p->reject($e);
- } catch (\Exception $e) {
- $p->reject($e);
- }
- }
- });
- return $p;
- }
- public function otherwise(callable $onRejected)
- {
- return $this->then(null, $onRejected);
- }
- public function wait($unwrap = true, $defaultDelivery = null)
- {
- return $unwrap ? $this->value : null;
- }
- public function getState()
- {
- return self::FULFILLED;
- }
- public function resolve($value)
- {
- if ($value !== $this->value) {
- throw new \LogicException("Cannot resolve a fulfilled promise");
- }
- }
- public function reject($reason)
- {
- throw new \LogicException("Cannot reject a fulfilled promise");
- }
- public function cancel()
- {
- // pass
- }
- }
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