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<?php |
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|
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declare(strict_types=1); |
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|
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namespace GuzzleHttp\Promise; |
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|
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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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* |
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* @param mixed $value Promise or value. |
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*/ |
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public static function promiseFor($value): PromiseInterface |
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{ |
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if ($value instanceof PromiseInterface) { |
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return $value; |
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} |
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|
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// Return a Guzzle promise that shadows the given promise. |
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if (is_object($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 Promise($wfn, $cfn); |
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$value->then([$promise, 'resolve'], [$promise, 'reject']); |
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|
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return $promise; |
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} |
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|
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return new FulfilledPromise($value); |
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} |
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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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* |
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* @param mixed $reason Promise or reason. |
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*/ |
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public static function rejectionFor($reason): PromiseInterface |
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{ |
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if ($reason instanceof PromiseInterface) { |
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return $reason; |
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} |
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|
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return new RejectedPromise($reason); |
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} |
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|
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/** |
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* Create an exception for a rejected promise value. |
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* |
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* @param mixed $reason |
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*/ |
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public static function exceptionFor($reason): \Throwable |
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{ |
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if ($reason instanceof \Throwable) { |
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return $reason; |
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} |
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|
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return new RejectionException($reason); |
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} |
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|
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/** |
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* Returns an iterator for the given value. |
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* |
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* @param mixed $value |
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*/ |
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public static function iterFor($value): \Iterator |
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{ |
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if ($value instanceof \Iterator) { |
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return $value; |
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} |
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|
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if (is_array($value)) { |
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return new \ArrayIterator($value); |
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} |
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|
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if (!is_iterable($value)) { |
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\trigger_deprecation( |
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'guzzlehttp/promises', |
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'2.5', |
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'Passing a non-iterable to %s::%s() is deprecated; guzzlehttp/promises 3.0 will require an iterable.', |
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__CLASS__, |
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__FUNCTION__ |
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); |
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} |
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|
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return new \ArrayIterator([$value]); |
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} |
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} |
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|
