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interface PromiseInterface in Lockr 7.3

A promise represents the eventual result of an asynchronous operation.

The primary way of interacting with a promise is through its then method, which registers callbacks to receive either a promise’s eventual value or the reason why the promise cannot be fulfilled.

@link https://promisesaplus.com/

Hierarchy

Expanded class hierarchy of PromiseInterface

All classes that implement PromiseInterface

7 files declare their use of PromiseInterface
ClientInterface.php in vendor/guzzlehttp/guzzle/src/ClientInterface.php
MockHandler.php in vendor/guzzlehttp/guzzle/src/Handler/MockHandler.php
PrepareBodyMiddleware.php in vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php
RedirectMiddleware.php in vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php
RequestException.php in vendor/guzzlehttp/guzzle/src/Exception/RequestException.php

... See full list

File

vendor/guzzlehttp/promises/src/PromiseInterface.php, line 13

Namespace

GuzzleHttp\Promise
View source
interface PromiseInterface {
  const PENDING = 'pending';
  const FULFILLED = 'fulfilled';
  const REJECTED = 'rejected';

  /**
   * Appends fulfillment and rejection handlers to the promise, and returns
   * a new promise resolving to the return value of the called handler.
   *
   * @param callable $onFulfilled Invoked when the promise fulfills.
   * @param callable $onRejected  Invoked when the promise is rejected.
   *
   * @return PromiseInterface
   */
  public function then(callable $onFulfilled = null, callable $onRejected = null);

  /**
   * Appends a rejection handler callback to the promise, and returns a new
   * promise resolving to the return value of the callback if it is called,
   * or to its original fulfillment value if the promise is instead
   * fulfilled.
   *
   * @param callable $onRejected Invoked when the promise is rejected.
   *
   * @return PromiseInterface
   */
  public function otherwise(callable $onRejected);

  /**
   * Get the state of the promise ("pending", "rejected", or "fulfilled").
   *
   * The three states can be checked against the constants defined on
   * PromiseInterface: PENDING, FULFILLED, and REJECTED.
   *
   * @return string
   */
  public function getState();

  /**
   * Resolve the promise with the given value.
   *
   * @param mixed $value
   * @throws \RuntimeException if the promise is already resolved.
   */
  public function resolve($value);

  /**
   * Reject the promise with the given reason.
   *
   * @param mixed $reason
   * @throws \RuntimeException if the promise is already resolved.
   */
  public function reject($reason);

  /**
   * Cancels the promise if possible.
   *
   * @link https://github.com/promises-aplus/cancellation-spec/issues/7
   */
  public function cancel();

  /**
   * Waits until the promise completes if possible.
   *
   * Pass $unwrap as true to unwrap the result of the promise, either
   * returning the resolved value or throwing the rejected exception.
   *
   * If the promise cannot be waited on, then the promise will be rejected.
   *
   * @param bool $unwrap
   *
   * @return mixed
   * @throws \LogicException if the promise has no wait function or if the
   *                         promise does not settle after waiting.
   */
  public function wait($unwrap = true);

}

Members

Namesort descending Modifiers Type Description Overrides
PromiseInterface::cancel public function Cancels the promise if possible. 4
PromiseInterface::FULFILLED constant
PromiseInterface::getState public function Get the state of the promise ("pending", "rejected", or "fulfilled"). 4
PromiseInterface::otherwise public function Appends a rejection handler callback to the promise, and returns a new promise resolving to the return value of the callback if it is called, or to its original fulfillment value if the promise is instead fulfilled. 4
PromiseInterface::PENDING constant
PromiseInterface::reject public function Reject the promise with the given reason. 4
PromiseInterface::REJECTED constant
PromiseInterface::resolve public function Resolve the promise with the given value. 4
PromiseInterface::then public function Appends fulfillment and rejection handlers to the promise, and returns a new promise resolving to the return value of the called handler. 4
PromiseInterface::wait public function Waits until the promise completes if possible. 4