88 lines
2.2 KiB
PHP
88 lines
2.2 KiB
PHP
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<?php
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namespace GuzzleHttp\Promise;
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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 $reason;
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public function __construct($reason)
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{
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if (method_exists($reason, 'then')) {
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throw new \InvalidArgumentException(
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'You cannot create a RejectedPromise with a promise.');
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}
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$this->reason = $reason;
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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 $this;
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}
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$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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return $p;
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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, $onRejected);
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}
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public function wait($unwrap = true, $defaultDelivery = null)
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{
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if ($unwrap) {
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throw exception_for($this->reason);
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}
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}
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public function getState()
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{
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return self::REJECTED;
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}
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public function resolve($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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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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public function cancel()
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{
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// pass
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}
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}
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