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