function Promise::resolver

1 call to Promise::resolver()

Promise::then in vendor/react/promise/src/Promise.php

Transforms a promise's value by applying a function to the promise's fulfillment or rejection value. Returns a new promise for the transformed result.

File

vendor/react/promise/src/Promise.php, line 169

Class

Promise

@template T @template-implements PromiseInterface<T>

Namespace

React\Promise

Code

private function resolver(?callable $onFulfilled = null, ?callable $onRejected = null) : callable {
    return function (callable $resolve, callable $reject) use ($onFulfilled, $onRejected) : void {
        $this->handlers[] = static function (PromiseInterface $promise) use ($onFulfilled, $onRejected, $resolve, $reject) : void {
            $promise = $promise->then($onFulfilled, $onRejected);
            if ($promise instanceof self && $promise->result === null) {
                $promise->handlers[] = static function (PromiseInterface $promise) use ($resolve, $reject) : void {
                    $promise->then($resolve, $reject);
                };
            }
            else {
                $promise->then($resolve, $reject);
            }
        };
    };
}