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amp/lib/Failure.php

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<?php
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namespace Amp;
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use React\Promise\PromiseInterface as ReactPromise;
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/**
* Creates a failed promise using the given exception.
*
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* @template-covariant TValue
* @template-implements Promise<TValue>
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*/
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final class Failure implements Promise
{
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private \Throwable $exception;
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/**
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* @param \Throwable $exception Rejection reason.
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*/
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public function __construct(\Throwable $exception)
{
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$this->exception = $exception;
}
/**
* {@inheritdoc}
*/
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public function onResolve(callable $onResolved): void
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{
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Loop::defer(function () use ($onResolved): void {
/** @var mixed $result */
$result = $onResolved($this->exception, null);
if ($result === null) {
return;
}
if ($result instanceof \Generator) {
$result = new Coroutine($result);
}
if ($result instanceof Promise || $result instanceof ReactPromise) {
Promise\rethrow($result);
}
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});
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}
}