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<?php

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declare (strict_types=1);

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namespace YoastSEO_Vendor\GuzzleHttp\Promise;

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final class Create

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{

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/**

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* Creates a promise for a value if the value is not a promise.

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* @param mixed $value Promise or value.

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public static function promiseFor($value) : \YoastSEO_Vendor\GuzzleHttp\Promise\PromiseInterface

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{

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if ($value instanceof \YoastSEO_Vendor\GuzzleHttp\Promise\PromiseInterface) {

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return $value;

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}

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// Return a Guzzle promise that shadows the given promise.

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

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$wfn = \method_exists($value, 'wait') ? [$value, 'wait'] : null;

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$cfn = \method_exists($value, 'cancel') ? [$value, 'cancel'] : null;

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$promise = new \YoastSEO_Vendor\GuzzleHttp\Promise\Promise($wfn, $cfn);

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$value->then([$promise, 'resolve'], [$promise, 'reject']);

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return $promise;

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}

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return new \YoastSEO_Vendor\GuzzleHttp\Promise\FulfilledPromise($value);

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}

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/**

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* Creates a rejected promise for a reason if the reason is not a promise.

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* If the provided reason is a promise, then it is returned as-is.

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* @param mixed $reason Promise or reason.

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public static function rejectionFor($reason) : \YoastSEO_Vendor\GuzzleHttp\Promise\PromiseInterface

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{

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if ($reason instanceof \YoastSEO_Vendor\GuzzleHttp\Promise\PromiseInterface) {

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return $reason;

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}

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return new \YoastSEO_Vendor\GuzzleHttp\Promise\RejectedPromise($reason);

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}

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/**

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* Create an exception for a rejected promise value.

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* @param mixed $reason

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public static function exceptionFor($reason) : \Throwable

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{

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if ($reason instanceof \Throwable) {

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return $reason;

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}

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return new \YoastSEO_Vendor\GuzzleHttp\Promise\RejectionException($reason);

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}

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/**

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* Returns an iterator for the given value.

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* @param mixed $value

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public static function iterFor($value) : \Iterator

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{

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if ($value instanceof \Iterator) {

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return $value;

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}

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if (\is_array($value)) {

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return new \ArrayIterator($value);

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}

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return new \ArrayIterator([$value]);

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}

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}

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