RejectedPromise.php in Zircon Profile 8

Namespace

GuzzleHttp\Promise

File

vendor/guzzlehttp/promises/src/RejectedPromise.php

<?php

namespace GuzzleHttp\Promise;


/**
 * A promise that has been rejected.
 *
 * Thenning off of this promise will invoke the onRejected callback
 * immediately and ignore other callbacks.
 */
class RejectedPromise implements PromiseInterface {
  private $reason;
  public function __construct($reason) {
    if (method_exists($reason, 'then')) {
      throw new \InvalidArgumentException('You cannot create a RejectedPromise with a promise.');
    }
    $this->reason = $reason;
  }
  public function then(callable $onFulfilled = null, callable $onRejected = null) {

    // If there's no onRejected callback then just return self.
    if (!$onRejected) {
      return $this;
    }
    $queue = queue();
    $reason = $this->reason;
    $p = new Promise([
      $queue,
      'run',
    ]);
    $queue
      ->add(static function () use ($p, $reason, $onRejected) {
      if ($p
        ->getState() === self::PENDING) {
        try {

          // Return a resolved promise if onRejected does not throw.
          $p
            ->resolve($onRejected($reason));
        } catch (\Exception $e) {

          // onRejected threw, so return a rejected promise.
          $p
            ->reject($e);
        }
      }
    });
    return $p;
  }
  public function otherwise(callable $onRejected) {
    return $this
      ->then(null, $onRejected);
  }
  public function wait($unwrap = true, $defaultDelivery = null) {
    if ($unwrap) {
      throw exception_for($this->reason);
    }
  }
  public function getState() {
    return self::REJECTED;
  }
  public function resolve($value) {
    throw new \LogicException("Cannot resolve a rejected promise");
  }
  public function reject($reason) {
    if ($reason !== $this->reason) {
      throw new \LogicException("Cannot reject a rejected promise");
    }
  }
  public function cancel() {

    // pass
  }

}

Classes

Name	Description
RejectedPromise	A promise that has been rejected.