AggregateException.php
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CancellationException.php
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Coroutine.php
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Create.php
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Each.php
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EachPromise.php
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FulfilledPromise.php
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Is.php
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Promise.php
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PromiseInterface.php
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PromisorInterface.php
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RejectedPromise.php
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RejectionException.php
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TaskQueue.php
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TaskQueueInterface.php
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Utils.php
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RejectedPromise.php
96 lines
| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace GuzzleHttp\Promise; |
| 6 | |
| 7 | /** |
| 8 | * A promise that has been rejected. |
| 9 | * |
| 10 | * Thenning off of this promise will invoke the onRejected callback |
| 11 | * immediately and ignore other callbacks. |
| 12 | * |
| 13 | * @final |
| 14 | */ |
| 15 | class RejectedPromise implements PromiseInterface |
| 16 | { |
| 17 | private $reason; |
| 18 | |
| 19 | /** |
| 20 | * @param mixed $reason |
| 21 | */ |
| 22 | public function __construct($reason) |
| 23 | { |
| 24 | if (is_object($reason) && method_exists($reason, 'then')) { |
| 25 | throw new \InvalidArgumentException( |
| 26 | 'You cannot create a RejectedPromise with a promise.' |
| 27 | ); |
| 28 | } |
| 29 | |
| 30 | $this->reason = $reason; |
| 31 | } |
| 32 | |
| 33 | public function then( |
| 34 | ?callable $onFulfilled = null, |
| 35 | ?callable $onRejected = null |
| 36 | ): PromiseInterface { |
| 37 | // If there's no onRejected callback then just return self. |
| 38 | if (!$onRejected) { |
| 39 | return $this; |
| 40 | } |
| 41 | |
| 42 | $queue = Utils::queue(); |
| 43 | $reason = $this->reason; |
| 44 | $p = new Promise([$queue, 'run']); |
| 45 | $queue->add(static function () use ($p, $reason, $onRejected): void { |
| 46 | if (Is::pending($p)) { |
| 47 | try { |
| 48 | // Return a resolved promise if onRejected does not throw. |
| 49 | $p->resolve($onRejected($reason)); |
| 50 | } catch (\Throwable $e) { |
| 51 | // onRejected threw, so return a rejected promise. |
| 52 | $p->reject($e); |
| 53 | } |
| 54 | } |
| 55 | }); |
| 56 | |
| 57 | return $p; |
| 58 | } |
| 59 | |
| 60 | public function otherwise(callable $onRejected): PromiseInterface |
| 61 | { |
| 62 | return $this->then(null, $onRejected); |
| 63 | } |
| 64 | |
| 65 | public function wait(bool $unwrap = true) |
| 66 | { |
| 67 | if ($unwrap) { |
| 68 | throw Create::exceptionFor($this->reason); |
| 69 | } |
| 70 | |
| 71 | return null; |
| 72 | } |
| 73 | |
| 74 | public function getState(): string |
| 75 | { |
| 76 | return self::REJECTED; |
| 77 | } |
| 78 | |
| 79 | public function resolve($value): void |
| 80 | { |
| 81 | throw new \LogicException('Cannot resolve a rejected promise'); |
| 82 | } |
| 83 | |
| 84 | public function reject($reason): void |
| 85 | { |
| 86 | if ($reason !== $this->reason) { |
| 87 | throw new \LogicException('Cannot reject a rejected promise'); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | public function cancel(): void |
| 92 | { |
| 93 | // pass |
| 94 | } |
| 95 | } |
| 96 |