<?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 (is_object($reason) && method_exists($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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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 = Utils::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 (Is::pending($p)) {

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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 Create::exceptionFor($this->reason);

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}

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return null;

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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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