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1 efrain 1 
<?php
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namespace GuzzleHttp\Promise;
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/**
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 * A special exception that is thrown when waiting on a rejected promise.
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 *
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 * The reason value is available via the getReason() method.
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 */
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class RejectionException extends \RuntimeException
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{
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    /** @var mixed Rejection reason. */
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    private $reason;
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    /**
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     * @param mixed  $reason      Rejection reason.
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     * @param string $description Optional description
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     */
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    public function __construct($reason, $description = null)
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    {
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        $this->reason = $reason;
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        $message = 'The promise was rejected';
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        if ($description) {
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            $message .= ' with reason: ' . $description;
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        } elseif (is_string($reason)
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            || (is_object($reason) && method_exists($reason, '__toString'))
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        ) {
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            $message .= ' with reason: ' . $this->reason;
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        } elseif ($reason instanceof \JsonSerializable) {
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            $message .= ' with reason: '
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                . json_encode($this->reason, JSON_PRETTY_PRINT);
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        }
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        parent::__construct($message);
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    }
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    /**
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     * Returns the rejection reason.
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     *
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     * @return mixed
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     */
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    public function getReason()
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    {
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        return $this->reason;
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    }
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}