<?php

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namespace GuzzleHttp\Promise;

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/**

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* A promise that has been fulfilled.

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*

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* Thenning off of this promise will invoke the onFulfilled callback

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* immediately and ignore other callbacks.

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*/

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class FulfilledPromise implements PromiseInterface

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{

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private $value;

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public function __construct($value)

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{

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if (is_object($value) && method_exists($value, 'then')) {

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throw new \InvalidArgumentException(

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'You cannot create a FulfilledPromise with a promise.'

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);

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}

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$this->value = $value;

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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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// Return itself if there is no onFulfilled function.

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if (!$onFulfilled) {

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return $this;

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}

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$queue = Utils::queue();

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$p = new Promise([$queue, 'run']);

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$value = $this->value;

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$queue->add(static function () use ($p, $value, $onFulfilled) {

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if (Is::pending($p)) {

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try {

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$p->resolve($onFulfilled($value));

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} catch (\Throwable $e) {

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$p->reject($e);

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} catch (\Exception $e) {

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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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return $unwrap ? $this->value : null;

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}

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public function getState()

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{

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return self::FULFILLED;

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}

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public function resolve($value)

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{

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if ($value !== $this->value) {

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throw new \LogicException("Cannot resolve a fulfilled 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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throw new \LogicException("Cannot reject a fulfilled promise");

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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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